Planetary Motion (Grade 9)
Print Test
(Only the test content will print)
Name: | Date: |
---|
Planetary Motion
1.
One complete revolution of Earth around the Sun is called a
- day.
- night.
- month.
- year.
2.
Earth is kept in orbit around the Sun by
- its speed and distance from the Sun.
- inertia and gravity.
- its shape and size.
- electricity and magnetism.
3.
Planets that are close to the Sun
- move through the asteroid belt.
- orbit faster than the outer planets.
- orbit slower than the outer planets.
- move closer and closer to the Sun.
4.
What is the shape of a planet's orbit?
- circular
- irregular
- elliptical
5.
The point in orbit where the planet is furthest away from the Sun is called
- aphelion.
- precession.
- perihelion.
- rotation.
6.
Using Brahe's precise observations, discovered three laws of planetary motion.
- Aristotle
- Kepler
- Hipparchus
- Copernicus
7.
What do changes in Earth's orbit affect most greatly?
- Earth's shape
- Earth's temperatures
- Earth's rotation
- Earth's tilt
8.
What causes the apparent movement of the Sun across the sky during the day on Earth?
- revolution of Earth in its orbit
- rotation of Earth on its axis
- location of Earth in space
- objects are moving around Earth
9.
Eccentricity refers to
- the wobble of Earth as it spins.
- the shift in the direction of the axis spin.
- the cycles of ice ages and warming periods.
- the elliptical shape of Earth's orbit.
10.
A very slow directional shift of Earth's axis that requires 26,000 years to complete is called
- precession.
- retrograde motion.
- occultation.
- perturbation.
You need to be a HelpTeaching.com member to access free printables.
Already a member? Log in for access. | Go Back To Previous Page
Already a member? Log in for access. | Go Back To Previous Page