31
Lesson 31 of 84 · Plate Tectonics
ExperimentThe Greenhouse Effect
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
- water cycle
- natural resource
Materials Needed
- thermometer
- rain gauge
- cotton balls
- food coloring
- clear container
- rocks
Safety First
- Do not mix unknown chemicals together.
Steps
Step 1 — Read
Read about Plate Tectonics and write down three key facts.
Step 2 — Do
Create a timeline of Earth's history on a 5-meter strip of paper. Place major events (first life, dinosaurs, ice ages, humans) at the correct scale.
Step 3 — Observe
Use your senses (except taste) to describe what you notice.
Step 4 — Record
Write a summary of your findings in 3-5 sentences.
Check Your Understanding
Question 1
1 of 3What is the water cycle?