Day and Night: Earth's Rotation (Part 3)

What You'll Learn

Earth rotates on its axis once every 24 hours, causing day and night. The side facing the sun experiences day, while the opposite side experiences night.

Key Words

orbit
rotation
revolution

Materials Needed

small ball (moon)
dark room
paper plate
markers
string

Safety First

Do not taste any materials.
Wear safety goggles when mixing liquids.
Wash hands after handling materials.

Steps

Step 1 — Read

Read about Space and write down three key facts.

Step 2 — Do

Build a scale model of the inner solar system using different-sized balls. Research the relative sizes and distances of the planets.

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

Why do we have day and night?