Wind and Air Pressure

What You'll Learn

Caves form when slightly acidic water dissolves limestone over thousands of years. Stalactites hang from the ceiling and stalagmites grow from the floor as minerals are deposited.

Key Words

landform
soil
rock cycle

Materials Needed

magnifying glass
newspaper
spray bottle
cups

Safety First

Do not look directly at the sun or bright lights.
Clean up spills immediately to prevent slipping.
Use materials only as directed in the experiment.

Steps

Step 1 — Read

Review the background information on Weathering and Erosion before starting.

Step 2 — Do

Set up a weather station: use a thermometer, rain gauge (a jar with a ruler), and wind sock (a plastic bag on a stick). Record data for one week.

Step 3 — Observe

Observe what happens and describe it in detail.

Step 4 — Record

Record your observations in your science journal with measurements and descriptions.

Check Your Understanding

Question 1

1 of 3

What is sediment?