Seasons and Earth's Tilt (Part 2)

What You'll Learn

The water cycle describes how water moves through Earth's systems. Water evaporates from oceans, condenses into clouds, falls as precipitation, and flows back to the ocean.

Key Words

conservation
tectonic plates

Materials Needed

cups
thermometer
rain gauge
cotton balls
food coloring

Safety First

Use materials only as directed in the experiment.

Steps

Step 1 — Read

Study the diagram and label the parts you recognize.

Step 2 — Do

Test rock hardness using Mohs scale: try scratching rocks with your fingernail, a penny, and a nail. Rank them from softest to hardest.

Step 3 — Observe

Note any unexpected results and think about why they happened.

Step 4 — Record

Share your findings with the class or a partner and discuss what you learned.

Check Your Understanding

Question 1

1 of 3

What are the three types of rocks?