Book 20 activities
Try it at home: 150 science activities from Book 20
Every question in A Million Whys Book 20, The Mountain Expedition, ends with a "Think like a scientist" idea. Here they are in one place. Each one links to its question page, with the video and the full answer.
Expedition 1: Mountain Giants of the World (25)
1. How Tall Does a Hill Have to Be to Become a Mountain?
Look at a map of your area with a grown-up and pick the highest bump of land. Would you call it a hill or a mountain? Why?
Do this with a grown-up2. What Are the Biggest Mountain Ranges in the World?
Find these five ranges on a globe or map. Put a sticker on each and say which continent it is on.
3. Which Is the Tallest Mountain on Each Continent?
Make a bar graph of the heights using paper strips. Which bar is the tallest? Which is the shortest?
4. Is Mount Everest Really the Tallest Mountain?
Pick up a ball of play dough and squash it a bit to make a bulge. Where would a mountain be farthest from the center?
5. How Do Surveyors Measure the Height of a Mountain?
Measure the height of a tree using a shadow. Stand a meter stick up, measure its shadow, and compare it with the tree’s shadow.
6. What Are the Main Kinds of Mountains?
Lay a towel on a table and push it from both ends to make folds. Then lift a book on one side, like a tilted block. Which one shows a fold mountain? Tell a grown-up what you see! Share what you discover with a grown-up.
Do this with a grown-up7. Why Are the Rocky Mountains Jagged but the Appalachians Rounded?
Compare a new crayon and a worn crayon. Which is sharper? Rocks wear down in the same way.
Do this with a grown-up8. What Makes the Canadian Rockies So Special?
Draw a picture of a Canadian Rockies scene with a peak, a lake, a forest, and an animal. Label each part.
9. What Is the Tallest Mountain in Canada?
On a map of Canada, find Yukon and Mount Logan. Trace a line to where you live. How far away is it?
10. What Makes the Andes the Longest Mountain Range on Land?
Stretch a string along the Andes on a map. Compare its length to the width of your country.
11. Why Is There Snow on a Mountain Near the Equator?
Draw Kilimanjaro with grassland at the bottom and snow at the top. Guess a temperature for the bottom, the middle, and the top. Which place is coldest, and why?
12. Are There Mountains Under the Sea?
Fill a bowl with water and place a mound of clay in it. The tip sticks out like an island. The rest is hidden below.
13. Which Is the Tallest Mountain in the Whole Solar System?
Draw Mount Everest as a one-inch bar on paper. Draw Olympus Mons next to it, two and a half inches tall. See how much bigger the Mars giant is! Share what you discover with a grown-up.
Do this with a grown-up14. Why Do Some Mountains Have Flat Tops?
Put a flat cookie on a mound of sand and gently blow or sprinkle water. The sand erodes, but the cookie stays on top.
Do this with a grown-up15. How Did the Matterhorn Get Its Pointed Shape?
Carve a pointed peak from a bar of soap by scraping away four sides with a spoon. Wash your hands afterward.
16. What Is a Mountain Pass?
Draw two mountains with a valley between them. Add a road through the pass. Where would you build the road?
17. How Does a Glacier Turn a Mountain Valley Into a U?
Draw a V-shaped valley and a U-shaped valley side by side. Label which one a river made and which one a glacier made.
18. How Do Mountains Get Their Names?
Find the story behind a mountain near you. Draw a picture and write a sentence about how it got its name.
19. Do Mountains Have Roots?
Float a block of wood in a bowl of water. Stack a smaller block on top. How much deeper does the whole thing sink? That is a model of a mountain root! Share what you discover with a grown-up.
Do this with a grown-up20. Why Do Faraway Mountains Look Blue?
Draw a row of mountains using darker colors in front and lighter blue-gray ones farther back. This makes a picture feel deep.
21. What Is the Continental Divide?
Pour a little water on the top of an upside-down bowl and see where it runs. The high point of the bowl is like a divide.
22. What Do Mountain Words Like Peak, Ridge, and Saddle Mean?
Draw a mountain and label peak, ridge, saddle, and face. Then use the words to describe a mountain in a photo.
23. How Steep Is a Steep Mountain Slope?
Prop a board on a stack of books at different heights and roll a marble down. When does the marble roll faster?
24. Can a Mountain Wear Away to Nothing?
Rub a sugar cube under a gentle trickle of water for a minute. Notice how it wears away, just like rock does over time.
25. How Do Scientists Figure Out How Old a Mountain Is?
Draw a timeline of mountain ages: Rockies, Alps, Appalachians. Add a mountain you know and estimate its age.
Expedition 2: Climbing the Life Zones (25)
26. Why Does It Get Colder as You Go Up a Mountain?
Check the temperature at the bottom of a hill and at the top with a thermometer on a calm day, with a grown-up. Is it different?
Do this with a grown-up27. What Are Life Zones on a Mountain?
Draw a tall mountain and color each life zone a different color. Label what grows in each stripe.
28. What Is the Treeline?
On a hike or road trip with a grown-up, watch for the place where trees stop growing. If you cannot go, look at a photo of a mountain and run your finger along the line where the trees stop.
Do this with a grown-up29. Why Do Trees Get Short and Twisted Near the Top?
With a grown-up, hold a ribbon in front of a small fan on low, keeping fingers away from the blades. Which way does it point? Trees near the treeline end up leaning the same way as the wind blows.
Do this with a grown-up30. Why Does Climbing a Mountain Feel Like Traveling Toward the Poles?
Look at two pictures: an Arctic tundra and an alpine meadow. List three things they have in common.
31. What Lives in the Foothills?
With a grown-up, look at a nearby hill or park. Write down three plants or animals you see.
Do this with a grown-up32. What Is a Montane Forest?
Collect a pine needle, a spruce needle, and a fir needle (only fallen ones). Which are flat and which are sharp? Wash your hands afterward.
Do this with a grown-up33. Why Are Mountain Evergreen Trees Shaped Like Cones?
Pile cotton balls on a flat paper plate and on an upside-down bowl. Which holds the “snow” better? Cones shed snow.
34. Why Is One Side of a Mountain Greener than the Other?
On a sunny day, feel the ground on a spot in the sun and in the shade. Which is warmer?
35. Why Do Mountain Meadows Burst Into Flowers All at Once?
Make a flower calendar showing months from snowmelt to snowfall. Place flower stickers where they would bloom.
36. What Is the Alpine Zone?
Find a picture of an alpine meadow. List three adaptations plants have to survive there.
37. Why Does Some Mountain Snow Turn Pink?
Put one drop of red food coloring in a cup of crushed ice and watch it spread. Then draw a mountain with a pink snow patch. Do not eat the snow or the ice.
38. Why Is Mountain Soil So Thin?
Put a thin layer of soil on a tilted tray and pour water over it. Watch how much washes away. Add moss and try again.
39. Why Does Spring Arrive Later High on a Mountain?
Keep a diary of when flowers bloom in your yard or park. Compare it with a place that is higher or lower.
40. What Is the Oldest Tree on a Mountain?
Make a timeline with the pyramids and a bristlecone pine on it. Which one started growing first?
41. Why Do Different Animals Live at Different Heights on a Mountain?
On your mountain drawing from earlier, add animals in the right zones. Who lives at the top?
42. Do Animals Move Up and Down Mountains?
Draw an elk in summer at the top and in winter at the bottom with an arrow between. Add a label for each season.
43. How Can People Farm on Steep Mountain Slopes?
Build a hill from sand and make steps in it. Pour a little water and compare it to a smooth slope. Which holds water better?
44. Why Does the Sky Look Darker From a Mountaintop?
Look straight up on a clear day and compare the color to near the horizon. Which is deeper blue? Never look at the Sun.
45. Why Can You See So Far From a Mountaintop?
Put a toy on the far side of a basketball. Lower your eye, then raise it, and notice when the toy appears over the curve.
46. How Did a Famous Explorer Find Out That Plants Live in Bands on Mountains?
Draw your own plant map on a hillside: write down what grows at the bottom, the middle, and the top.
47. Why Is the Treeline Higher Near the Equator than in Canada?
Draw a graph with latitude on the bottom and treeline height on the side. Plot the three places mentioned.
48. What Are Sky Islands?
Draw a map of dry land with three mountain “islands” popping up. Label what lives on each peak.
49. Why Are Some Mountain Plants and Animals Moving to Higher Ground?
Look at your mountain drawing and imagine a warmer climate. Draw arrows showing which plants might move up.
50. What Colors Make Up the Layers of a Faraway Mountain?
Take a photo or draw a mountain in your area. Mark each color band. Write what might live there. Then share your mountain with a grown-up! Share what you discover with a grown-up.
Do this with a grown-upExpedition 3: High-Mountain Life (25)
51. How Do Mountain Goats Climb Steep Cliffs Without Slipping?
Sit on a chair and press one sock-covered foot against a smooth floor, then push gently sideways. Now try it with a rubber-soled shoe on. Which one grips better? Rubber pads help goats grip rock.
52. What Do a Bighorn Sheep’s Curly Horns Tell Us?
Wrap a pipe cleaner into a spiral to make a horn. Add a ring with marker for each year.
53. Why Does a Pika Make a Pile of Hay?
Collect handfuls of dry grass or leaves outdoors (only from the ground). Make a haypile in a corner of your yard.
Do this with a grown-up54. Why Do Marmots Whistle?
Practice whistling a warning tune. How far does your whistle carry across a yard?
55. How Do Snow Leopards Live in Cold Mountains?
Draw a snow leopard in the snow with its tail wrapped around it. Label the fur, paws, and tail.
56. How Do Animals Like Yaks and Llamas Cope with Thin Air?
Take a deep breath and then breathe out slowly. Imagine having much bigger lungs for each breath.
57. How Do Big Birds Soar Over Mountains Without Flapping?
Spread your arms like wings and glide in a slow circle, tilting a little. Imagine rising air holding you up the way it holds a soaring eagle.
58. How Does a Ptarmigan Survive in a Snow Burrow?
Scoop a small cave in a pile of blankets and tuck a stuffed bird inside. Why does a snug cave keep it warm?
59. What Are Cushion Plants?
Crumple a piece of cloth into a tight ball. Does it hold heat better than a flat sheet? Hold each in your hands.
60. Why Are Alpine Flowers So Bright for Such Little Plants?
Pick three colors from an alpine flower photo and paint a flower with the same bright colors.
61. Why Do Some Alpine Grasses Grow Baby Plants Instead of Seeds?
Sprout a bean on a damp paper towel in a bag. Check it every day. Plants that start fast have an advantage in short summers.
62. How Can a Flower Bloom Through Snow?
Put a dark stone and a light stone on snow or ice in the sun. Which one melts a deeper hollow?
63. How Do Bumblebees Stay Warm High in the Mountains?
Wrap a thermometer in cotton and another one bare. Place both in a cool spot for ten minutes. Which stays warmer?
64. How Do Mountain Animals Find Food When Snow Covers Everything?
Hide dry cereal in a tray of flour or cotton. Dig with your fingers like an elk to find it.
65. How Can Bar-Headed Geese Fly Over the Himalayas?
Flap your arms 30 times as if you were a goose. How does your breathing change? Now imagine doing that in thin air.
66. Why Do Mountain Gorillas Have Such Thick Fur?
Draw a gorilla family in a misty forest. Add the thick fur and a leafy nest.
67. What Is the Highest-Living Animal on Earth?
Cut out a tiny paper spider and place it on a drawing of a mountain at the right height. Label the height.
Do this with a grown-up68. Which Mountain Animals Have Built-In Snowshoes?
Press your hand flat into soft clay. Then press your fist into the clay. Which one sinks less? Spreading out weight keeps you on top!
69. How Do Baby Mountain Goats Learn to Climb So Early?
Draw a mother goat and a kid on a rocky ledge. Add arrows to show the safe route they follow.
70. Why Would an Ibex Climb a Dam Wall?
Draw an ibex on a steep wall with a speech bubble. What would it say about why it climbed?
71. How Do Scientists Count Animals on Steep, Snowy Slopes?
Make a tally chart of the birds you see out your window for ten minutes. Compare days.
72. Why Do Flies Matter So Much to High-Mountain Flowers?
On a sunny day, watch one flower in a park or garden for five minutes. Tally which insects visit it. Do you see more flies, bees, or other bugs?
73. Which Animals Live in the Canadian Rockies?
Make a Rockies animal bingo card with 9 squares. Mark them off as you learn about each one.
74. Why Do Wolverines Wander So Far Across the Mountains?
On a map, draw a circle for a wolverine’s territory. Compare it with the area of your neighborhood.
75. How Does a Bird Help Plant Mountain Forests?
Hide ten small objects around a room and then try to remember where each is. How many can you find?
Expedition 4: Thin Air & Mountain Weather (25)
76. Why Does Air Pressure Drop as You Go Up a Mountain?
Squeeze a sponge in your hand. Imagine a tall stack of sponges on top of it. How would pressure change if some were removed?
77. How Much Air Is There at the Top of Mount Everest?
Jog in place for 30 seconds and notice how fast you breathe. Hikers in thin air breathe that fast even when resting. Stop if you feel dizzy.
78. Why Do Snack Bags Puff Up When You Drive Into the Mountains?
Next time your family drives up a hill, ask a grown-up to check a sealed snack bag at the top and the bottom. Which looks puffier?
Do this with a grown-up79. How Can a Watch Tell How High You Are?
Count the steps in a staircase and multiply by 7 inches to estimate how high you climbed. A watch makes the same estimate using air pressure instead of counting steps.
80. Why Do You Sunburn Faster in the Mountains?
Put a sunprint paper or UV-bead bracelet in the shade and another in the Sun. Which changes color more? That shows UV at work. Wear sunscreen, too.
81. Why Does Wind Roar Through Mountain Passes?
Blow through a wide-open hand and then through a small gap between your fingers. Where does the air feel faster?
82. Why Does the Wind Blow Uphill During the Day and Downhill at Night?
On a sunny day, blow bubbles over sunny pavement and over shady grass. Which way do they drift? Warm air rises.
83. What Is a Lenticular Cloud?
Draw a mountain with wind arrows going over it and wavy lines behind it. Put a lens-shaped cloud at the top of each wave.
84. What Is a Banner Cloud?
Hold a pencil upright and blow across its side with a thin tissue strip near it. Watch the strip flutter behind the pencil.
85. Why Do Hikers Start Early to Avoid Afternoon Storms?
Watch the sky from a window on a summer day. Note when the first puffy clouds appear and when they get tall.
86. How Does a Mountain Range Squeeze the Rain Out of the Wind?
Soak a sponge with water and squeeze it as you move your hand up. The water falls out on the way up, and the sponge is drier on the other side.
87. What Is the “Snow Eater” Wind That Melts Snow in Hours?
Pump a bicycle tire (with a grown-up) and feel the pump get warm. Squeezing air makes it hotter, just like a chinook.
Do this with a grown-up88. Why Can Mountain Weather Change So Fast?
Put on a jacket, then take it off. Notice how a layer changes how you feel. Packing layers helps in mountain weather.
89. Why Can a Valley Be Colder than the Slope Above It?
Fill a shallow pan with warm tap water. Slowly pour a little cold blue-colored water down the side. Watch the heavy cold water sink and pool on the bottom.
90. Why Does It Snow So Much More in the Mountains than in the Valleys?
Make a chart for one week. Each day, record whether it is rain or snow in your town. Do the same for a higher place nearby, using a weather app. Which place gets more snow?
91. What Is a Mountain Weather Station?
Build a homemade weather station: a thermometer, a wind sock from a ribbon, and a rain jar. Check them each day.
92. Why Can It Snow in July on a Mountain?
Pack a pretend backpack for a July hike in the mountains. Add clothes for both warm sun and snow.
93. What Is Alpenglow?
Use a pink-orange crayon to color the top of a mountain drawing, and dark blue for the valley.
94. What Is a Brocken Spectre?
Stand with a flashlight behind you and cast a shadow on a wall. Move closer and farther to make it grow and shrink. Do not touch hot lamp bulbs.
Do this with a grown-up95. Why Is a Mountaintop a Bad Place to Be in a Thunderstorm?
Indoors by a window during a storm, count the seconds from a flash to the thunder. Every 5 seconds is about 1 mile. A short count means the storm is close, and it’s time to be inside.
96. Can You Walk Inside a Cloud?
Breathe onto a cold window or mirror and watch the little droplets. Clouds are made of drops like that.
97. Why Does a Ball Fly Farther at High Altitude?
Throw a light foam ball and a heavy ball gently outdoors. Which one loses more speed? Air resistance matters more for lighter things.
Do this with a grown-up98. Why Do Airplanes Need Longer Runways at High Airports?
Hold a strip of paper just under your lip and blow across the top. It rises! Faster air over a wing gives more lift.
99. Why Is It So Hard to Forecast Mountain Weather?
Check the forecast for a mountain town. Then check the forecast for your own town. Look at how different they are today. Why might the mountain be colder or windier?
100. What Are the Tiny White Pellets That Fall in Mountain Storms?
Roll tiny balls of cotton onto a dark plate and compare them with a photo of graupel. Why would these be softer than hail?
Expedition 5: Snow, Ice & Rock Clues (25)
101. How Does Snow Pile Up Into Layers on a Mountain?
Sprinkle flour, cocoa, and powdered sugar in layers in a clear jar. Look at the side to see the stripes, just like snow layers.
102. Why Do Snow Scientists Dig Pits in the Snow?
Use a spoon to scoop a shallow cut, no deeper than your knee, into a flat pile of snow in your yard. Use a magnifying glass to look at the layers on the side. Never tunnel into snow or dig near a slope or under a snowbank.
103. Why Does a Whole Layer of Snow Sometimes Let Go and Slide?
Stack a few pillows on a tilted board and watch gravity pull them. This shows why steep slopes with piled-up layers are slippery. Never play on steep snow.
104. How Do Avalanche Forecasters Keep People Safe?
Make a danger scale poster with colors from green to red and write what each level means.
105. What Is a Cornice?
Use a spoon and a pile of flour or sugar to make a curl on the edge of a book. Notice how it hangs over.
106. How Does a Glacier Form High on a Mountain?
Pack a handful of fresh snow tightly between mittens for 30 seconds. Does it get harder and clearer? Glacier ice forms in a similar way, only much slower.
107. What Carved the Giant Bowls Near Mountaintops?
Make a mound of clay. Scoop a bowl shape out of the top with a spoon. Pour in a little water to make your own tarn lake. Explain how ice did the same job.
108. What Are Moraines, the Rubble Ridges Left by Melting Glaciers?
Push a ruler through a tray of sand and see the ridges that form on each side. Imagine a glacier doing this.
109. How Do Scientists Measure Whether a Mountain Glacier Is Growing or Shrinking?
Put an ice cube on a plate, measure it, and measure again each hour as it melts. Make a chart.
110. Why Do Cliffs Have Piles of Broken Rock at Their Feet?
Slowly pour dried beans or rice onto a tilted tray to form a pile. Notice how big and small pieces sort themselves.
111. Why Do Big Granite Domes Peel Like Onions?
Peel the layers of an onion and notice how they wrap around. Rock domes break off in sheets in a similar way.
112. Why Do Some Mountain Rocks Look Like Wavy Ribbons?
Stack colored paper or towels on a table and push gently from both sides. Watch the layers fold.
113. How Did a Giant Boulder Get to a Place Where It Doesn’t Belong?
Find a large boulder in a park. Look at it closely and see if its rock looks different from nearby rocks.
114. Why Are Some Mountain Cliffs Red, Green, or Yellow?
Rub a piece of red brick, a gray rock, and a chalk piece on a paper towel to see what streaks they leave. Which one is closest to the red cliffs? Wash your hands afterward.
115. What Are Hoodoos?
Stack a flat cookie on a tall blob of sand and gently spray water to see the sand wash away while the cap protects its pillar.
Do this with a grown-up116. Why Do Rocks Sometimes Tumble Off Cliffs?
Draw a danger sign for a rockfall area. What picture and words would you use?
117. What Is a Rock Glacier?
Pour a thick paste of mud on a tilted board and watch it creep. Stir in pebbles to see what happens.
118. Why Do Some Mountain Forests Have Bare Stripes?
Draw a forested mountain with a bare stripe. Label what grows back there.
119. Where Is the Line Above Which Snow Never Melts Away?
Draw a mountain with a snow line and mark the height. Show two different snow lines for a warm year and a cool year.
120. Why Is Snow in the Rockies So Light and Fluffy?
Fill one cup with flour and one with wet sand. Which is lighter? Compare to powder snow and wet snow.
121. Why Are Mountains Called Water Towers?
Freeze a bowl of water, then let it melt slowly through a hole in a cup. This is how mountains release water.
122. How Can Scientists Measure Snow in Inches of Water?
Scoop a cup of fresh snow, let it melt, and measure the water. How much did you get?
123. Why Do Mountain Streams Run Higher in the Late Afternoon?
Put an ice cube in a funnel above a cup in a warm spot. Check the dripping rate each hour as the room warms.
124. Why Are Some of the Oldest Weird Animal Fossils Found High in the Rocky Mountains?
Invent your own weird ancient sea animal, with extra eyes or legs. Draw it and name it.
125. How Can You Read a Mountain’s History From Its Shape?
Look at a photo of a mountain and list three clues it holds about its past. Draw them.
Expedition 6: Trails, Lifts & Mountain Smarts (25)
126. Why Do Mountain Trails Zigzag Back and Forth?
Roll a toy car straight up a steep board and then zigzag up it. Which route is easier to climb? Draw the zigzag path.
127. How Does a Contour Map Show a Mountain?
Trace around a small hill of clay with water levels: add a bit of water, trace the edge, add more, trace again. You’ve made contour lines.
128. What Are Cairns and Trail Blazes?
Design a trail marker symbol using three simple shapes. Use chalk to mark a path in your yard. Can a friend follow it? Keep it clear and simple, so anyone can understand it.
129. How Does a Gondola Lift Get Up the Mountain?
Hang paper cups from a loop of string and rotate it around two pencils. Watch the cups go around, just like gondolas.
130. How Does a Chairlift Work?
Draw a chairlift with towers and cable. Add the motor at the bottom and label the safety bar.
131. How Do Cog Railways and Funiculars Climb Slopes That Normal Trains Can’t?
Run a toy car with a gear along a toothed ruler or a comb. See how it grips. Compare with a smooth ruler.
132. How Do Ski Areas Make Snow?
Dress warmly and, with a grown-up, mist a spray bottle of water on a very cold day. Do the drops freeze in the air or land as water? Go inside to warm up afterward.
Do this with a grown-up133. Why Do Skis Slide So Well on Snow?
Slide an ice cube on a plate and then on a rough towel. Which glides better? A thin film of water helps a smooth glide.
134. How Do Trains Spiral Inside a Mountain?
Draw a spiral track that climbs a mountain. Show how the track loops over itself.
135. Why Do Some Mountain Highways Have Long Roofs Called Snow Sheds?
Make a small shed from cardboard over a toy road. Drop cotton “snow” from above and see if the shed protects the road.
136. Why Is It Important to Drink Water and Snack on a Mountain Hike?
Pack a snack bag and a water bottle for a family outing. Draw a picture of what you chose and why.
137. Why Do Hikers Carry the “Ten Essentials”?
Pack a pretend daypack with all ten essentials from a list. Which one do you think is most useful, and why?
138. Why Do Mountain Trails Have Steps, Boardwalks, and Little Ditches?
Pour water down a sand slope with a smooth path and then with little ridges across it. Which path holds up better?
139. Why Is Alpine Tundra So Easily Damaged?
Mark off a small square in your yard with string. Count how many plant types live in it. Imagine they grow ten times slower.
140. What Does “Leave No Trace” Mean?
Make a small “leave no trace” kit: a bag for litter, a pencil, and a notebook. Use it on your next outing.
141. How Do Hikers Stay Safe Around Mountain Wildlife?
Pace out 130 big steps outside to see how far 100 meters is, the distance to keep from bears and wolves. Then count 40 steps for 30 meters, the distance to keep from elk. Draw a sign that reminds visitors to keep wildlife wild.
Do this with a grown-up142. Why Do Hikers Set a Turnaround Time?
Plan a pretend hike: write a start time, a turnaround time, and a get-home time. Why does each one matter?
143. What Jobs Help Keep Mountains Safe and Fun?
Pick one mountain job and write what you would wear, carry, and check each morning.
144. How Do Mountain Huts Stay Warm and Stocked?
Design a mountain hut on paper. Show where the bunks, the stove, and the solar panel go.
Do this with a grown-up145. Why Do Mountains Look Closer than They Really Are?
Look at a tall building or hill far away and guess how many steps it is. Then check the distance on a map with a grown-up.
Do this with a grown-up146. What Should a Kid Do If They Get Separated From Their Group on a Trail?
With a grown-up, make a whistle card: “Stop. Stay put. Three blasts.” Keep a whistle on your backpack.
Do this with a grown-up147. How Can You Enjoy Mountains in Every Season?
Draw four mountain scenes, one for each season. Label an activity and one nature clue for each.
148. How Do Wolves and Bears Get Across the Trans-Canada Highway in Banff?
Build a model highway with a tunnel under it from a cardboard strip and a paper tube. Let toy animals cross safely.
149. How Can You Be a Mountain Scientist?
Start a nature journal today. Write the date, weather, and one thing you noticed outside.
Do this with a grown-up150. What Mountain Puzzles Are Left to Solve?
Write down three mountain questions you still have. Pick one and plan how a scientist could find the answer.