Climate Zones of the World (Part 2)

What You'll Learn

Climate change refers to long-term shifts in temperature and weather patterns. Human activities, especially burning fossil fuels, have increased greenhouse gases and accelerated warming.

Key Words

precipitation
evaporation

Materials Needed

sand
clay
water
plastic tray
magnifying glass

Safety First

Handle glass items carefully to avoid breakage.
Do not mix unknown chemicals together.

Steps

Step 1 — Read

Review the background information on Earth Systems before starting.

Step 2 — Do

Investigate soil layers: fill a jar with soil and water, shake it, and let it settle overnight. Identify the layers of clay, silt, sand, and organic matter.

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 3

What is the greenhouse effect?