Free printables
Book 13 science quiz: free printable worksheet
A free 10-question matching quiz for kids, parents and teachers, based on A Million Whys Book 13, The Light Expedition. Every fact comes straight from a page in the book. Write the letter of the matching question next to each fact. The answer key links to the video for each question.
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Name: ______________________ Date: ______________ Score: ____ / 10
The questions
- A. Why Does Light Travel in Straight Lines?
- B. Why Do Houseplants Lean Toward a Window?
- C. Why Do Screens Use Only Red, Green, and Blue Dots?
- D. Why Does a Red Apple Look Almost Black Under a Green Light?
- E. Why Do Some Lenses Make Things Look Smaller?
- F. Why Does a Sheet of Paper Glow When You Hold a Flashlight Behind It?
- G. Why Is Muddy Water Cloudy?
- H. How Does a Solar-Powered Calculator Work Without a Battery?
- I. Why Can a Laser Read the Tiny Bumps on a Disc?
- J. Why Do Airplanes and Boats Have Red and Green Lights?
Match each fact to its question
- The same trick lets a magician change the colors of props with different colored lights. ______
- A DVD’s pits are smaller and closer together than a CD’s, so it holds a lot more. ______
- Up close, a white area on a screen is really a crowd of red, green, and blue dots all glowing at once. ______
- Scientists use cloudiness, called turbidity, to check how clean a lake is. ______
- Sunflowers in bud follow the Sun across the sky, then stop when they bloom. ______
- Lanterns and lampshades often use paper to make a soft glow. ______
- Remember: “left” and “red” are both shorter words than “right” and “green.” ______
- Builders and surveyors “sight along a line” to check that things are straight, using the fact that light does not wiggle on its own. ______
- Solar cells power satellites and space stations, too. ______
- A peephole squeezes a whole hallway into a tiny circle. ______
Show the answer key
- D (The same trick lets a magician change the colors of props with different colored lights. Book 13, Question 48)
- I (A DVD’s pits are smaller and closer together than a CD’s, so it holds a lot more. Book 13, Question 123)
- C (Up close, a white area on a screen is really a crowd of red, green, and blue dots all glowing at once. Book 13, Question 33)
- G (Scientists use cloudiness, called turbidity, to check how clean a lake is. Book 13, Question 93)
- B (Sunflowers in bud follow the Sun across the sky, then stop when they bloom. Book 13, Question 16)
- F (Lanterns and lampshades often use paper to make a soft glow. Book 13, Question 78)
- J (Remember: “left” and “red” are both shorter words than “right” and “green.” Book 13, Question 137)
- A (Builders and surveyors “sight along a line” to check that things are straight, using the fact that light does not wiggle on its own. Book 13, Question 1)
- H (Solar cells power satellites and space stations, too. Book 13, Question 109)
- E (A peephole squeezes a whole hallway into a tiny circle. Book 13, Question 63)