PDN 4-2

What is the big question on page 11?

• How does the earth move?

• What causes seasons?

What two major ways does earth move?

• Tilt and Wobble
• Orbit and Spin
• Axial and Orbital
• Rotation and Revolution

The imaginary line that passes through Earth's center and the North & South poles is called the Earth's

• axis

• rotation

• revolution

• orbit

The spinning of Earth on its axis is called

• axis

• rotation

• revolution

• orbit

The movement of one object around another.

• axis

• rotation

• revolution

• orbit

The path of an object as it revolves around another object in space.

• axis

• rotation

• revolution

• orbit

How many earth days are in one revolution?

• 182 (half of a year)

• 365 (a year)

• 92 (quarter of a year)

• 45