How can you measure a lake's temperature at different depths?

What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. How can you measure a lake's temperature at different depths?

The Big Idea

Water temperature changes with depth! You can measure it yourself. How?

The Setup

Step one: The Setup. Tie a thermometer to a string with a small weight. Lower it from a dock or shore, with a grown-up beside you.

Take Readings

Step two: Take Readings. Wait a minute, pull it up, and read it quickly before it changes. Record the temperature at the surface, one meter down, and further down.

Graph It

Step three: Graph It. Draw a graph with depth on one side and temperature on the other. In summer, you'll see a drop in the thermocline.

A Closer Look

Let's take a closer look! Measures. Lowers it. Pulls it down. Shows the drop.

Quick Facts

Quick facts! Scientists use electronic sensors that record temperatures at many depths. Wait a minute. Look for the thermocline. With a grown-up.

Think Like a Scientist

Now, think like a scientist! Leave a bucket of water in the sun. Measure the temperature at the surface. Measure it about one foot down. Write both numbers down. Is there a difference?

Outro

To measure a lake's temperature at different depths, lower a weighted thermometer on a string with a grown-up, wait a minute, and read it quickly at several depths. A graph of depth and temperature shows the summer thermocline. Science is amazing! Keep wondering and keep exploring! Share what you learned with someone at home, and see what they think! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!