Motions in the Universe

About how long does it take Earth to complete one revolution around the Sun?

• 1 year

• 14 days

• 24 hours

• 27.3 days

How is the moon illuminated?

• It produces its own light.

• It reflects light from the Sun.

• It transforms energy into light.

  .

• It absorbs light from the Earth

What occurs when the moon blocks the view of the Sun?

• neap tide

• spring tide

• solar eclipse

• lunar eclipse

Which event occurs during high tide?

• All of Earth’s ocean levels rise.

• The moon’s orbit is closer to Earth.

• The gravity of the Sun and moon cause the Earth’s crust and water to bulge.

• Earth’s crust and water are being pulled in opposite directions by the Sun and moon.

When two objects are near each other, how would increasing one object’s mass affect it?

• The shape of the object would change.

• The weight of the object would decrease.

• The gravitational force of the object would increase.

• The mass of the object would be stronger than gravity.

At which location would an object’s weight be the greatest?

• on Pluto

• on Earth

• on the Sun

• on the moon

Which statement supports Newton’s first law of motion?

• Planets can change the direction of their own orbital path.

• Planets with more inertia will not be impacted by the Sun’s gravity.

• Planets can move at a varying speed due to forces exerted in space.

• Planets with a greater mass will orbit more quickly than smaller planets.

Look at the diagram of the moon and three different paths that it could take.

Which description applies best to pathway 2?

• the path of the moon toward the Sun

• the path of the moon’s orbit around Earth

• the path the moon would take if it had a larger mass than the Sun

• the path the moon would take if there was no force of Earth’s gravity

Which characteristic is common to all inner planets?

• rings

• moons

• rocky surfaces

• slow revolutions

Which phrase describes the composition of the outer planets?

• are gaseous

• contain water

• have high densities

• are made mostly of liquid