Planets: Inner vs Outer

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

revolution
constellation

Steps

Step 1 — Read

Read and 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.

Step 2 — Do

Compare your results with a partner.

Step 3 — Observe

Watch carefully for any changes and note the time.

Step 4 — Record

Create a data table to organize your measurements.

Check Your Understanding

Question 1

1 of 3

Why do we have day and night?