Which response is the BEST answer for:
If gravity was not present, which direction would the Earth move?

• Earth would keep revolving around the sun as normal.
• Earth would start to orbit around the moon.
• Earth would continue moving in a straight line along the path of it's velocity.
• Earth would stop rotating, and crash into the sun.

Complete the following sentence with the correct term.
Gravity is a _________ by which a planet or other body __________ objects  towards it's ____________.

• force, draws, center
• force, pushes, center
• thing, draws, middle
• force, pulls, atmosphere

The force of gravity between two planets depends on _____________________________.

• the mass of one of the planets and the amount of moons the planet has.
• the amount of mass of each planet and the distance between them.
• the volume of each planet and the type of core the planet has.
• how old the planets are and the distance between them.

What is the relationship between mass and gravity?

• As the mass of the planet decreases, the force of gravity increases.
• There is no relationship between mass and gravity.
• Mass and gravity are the same thing.
• As the mass of the planet increases, the force of gravity increases.

What are the four terrestrial planets?

• Mercury, Venus, Pluto, Earth
• Mars, Venus, Earth, Mercury
• Mercury, Venus, Mars, Enceladus
• Jupiter, Saturn, Uranus, Neptune

What are four facts about Mercury?

• - 2nd closest planet to the sun
  - surface is lifeless and covered with craters
  - orbits the sun fastest of all the planets
  - has a dense, rocky composition
• - closest planet to the sun
  - surface is lifeless and covered with craters
  - orbits the sun fastest of all the planets
  - made of gas
• - closest planet to the sun
  - surface is lifeless and covered with craters
  - orbits the sun fastest of all the planets
  - has a dense, rocky composition
• - closest planet to the sun
  - surface is covered with dried rives and lakes
  - orbits the sun fastest of all the planets
  - has a dense, rocky composition

What are four facts about Venus?

• - Earth and Venus are similar sizes, but Venus is slightly smaller
  - Does not have liquid water
  - The hottest terrestrial planet
  - Does not have mountains and volcanoes
• - Earth and Venus are similar sizes, but Earth is slightly smaller
  - Does not have liquid water
  - The hottest terrestrial planet
  - Has mountains and volcanoes
• - Earth and Venus are similar sizes, but Venus is slightly smaller
  - Has liquid water
  - The hottest terrestrial planet
  - Has mountains and volcanoes
• - Earth and Venus are similar sizes, but Venus is slightly smaller
  - Does not have liquid water
  - The hottest terrestrial planet
  - Has mountains and volcanoes

What are four facts about Earth?

• - Largest terrestrial planet
  - Covered by more than 70% water
  - Atmosphere of nitrogen and oxygen make it breathable
  - 3rd planet from the sun
• - Largest terrestrial planet
  - Covered by more than 70% land
  - Atmosphere of nitrogen and oxygen make it breathable
  - 3rd planet from the sun
• - Smallest terrestrial planet
  - Covered by more than 70% water
  - Atmosphere of nitrogen and oxygen make it breathable
  - 3rd planet from the sun
• - Largest terrestrial planet
  - Covered by more than 70% water
  - Atmosphere of nitrogen and oxygen make it breathable
  - 4th planet from the sun

What are four facts about Mars?

• - Warm, rocky, full of water
  - Larger than Mercury, but smaller than Venus
  - Appears red because of rusty iron in the soil
  - 4th planet from the sun
• - Cold, rocky, waterless
  - Larger than Mercury, but smaller than Venus
  - Appears red because of rusty iron in the soil
  - 3rd planet from the sun
• - Cold, rocky, waterless
  - Larger than Mercury, but smaller than Venus
  - Appears red because of rusty iron in the soil
  - 4th planet from the sun
• - Cold, rocky, waterless
  - Larger than Venus, but smaller than Earth
  - Appears red because of rusty iron in the soil
  - 4th planet from the sun

What are four facts about Jupiter?

• - 5th planet from the sun
  - Largest planet in the solar system
  - Reddish color caused by clouds of sulfur and ammonia
  - Has a 400 year old storm called the Great Red Spot
• - 5th planet from the sun
  - Largest planet in the solar system
  - Reddish color caused by clouds of rusted iron
  - Has a 400 year old storm called the Great Red Spot
• - 5th planet from the sun
  - Largest planet in the solar system
  - Reddish color caused by clouds of sulfur and ammonia
  - Has a 400 year old storm called the Great Red Oval
• - 6th planet from the sun
  - Largest planet in the solar system
  - Reddish color caused by clouds of sulfur and ammonia
  - Has a 400 year old storm called the Great Red Spot