Unit 3 Solar System Quizs

The gravitational force between Earth and the Sun causes ______.

• ocean tides
• Earth's orbit
• Earth's atmosphere
• Moon's orbit

What causes a solar eclipse?

• Earth's shadow
• the moon's shadow
• the sun stops shining for a moment
• Earth's atmosphere

How often does Earth orbit the sun?

• 30 days
• 24 hours
• 365.25 days
• 12 hours

The furthest four planets are called the _______ planets.

• inner

• outer

What is the degree of Earth's tilt of axis?

• 0°
• 23.5°
• 66.5°
• 90°

The earth________ around it's axis (another word for spin)?

• Revolves

• Jumps

• Rotates

• Skips

The farther apart two objects are, the _______ the gravitational force.

• weaker
• stronger
• less stable
• more stable

The closest four planets are called the ________ planets.

• inner

• outer

A lunar eclipse happens when _____.

• the sun stops shining for a moment
• the moon changes its orbit
• the moon's shadow is cast on Earth
• Earth's shadow is cast on the moon

The ___________ is a region of thousands of small bodies that exists outside the orbit of the planets. Objects in this area consist of "ices" such as ammonia, water, and methane.

• dwarf planets

• comets

• Asteroid belt

• Kuiper belt

• Oort cloud