G5 Lesson1,2

If there is no Earth's gravity, the moon would ..........

• Revolve faster around Earth
• Still orbit Earth
• Attract to Earth
• Float off into space

All the following are properties of Earth's gravity, except ..........

• It pushes objects upward
• It affects the moon
• It pulls objects downward
• It is a type of attraction force

Which of the following examples does not clearly explain how the force of gravity pulls objects toward the center of Earth?

• An apple falls down from a tree onto the soil
• A skydiver jumps out of an airplane
• A pen moves on a table and drops onto the floor
• A rocket moves up toward the sky

Objects are pushed away from each other due to gravity.

• TRUE
• FALSE

Planets in the solar system revolve in fixed orbits due to the gravity between the Sun and planets.

• TRUE
• FALSE

A person can exert a weak force to move ..........

• A big truck
• A toy car
• A real car
• A very big rock

Wind turbine blades move by the effect of ..........

• Magnetism
• Wind
• Electricity
• Water vapor

Which of the following statements describes gravity in a correct way? ..........

• Gravity pulls objects only
• Gravity is found on Earth only
• Gravity pushes objects away from each other
• Gravity increases between small objects

Earth attracts objects towards ..........

• Its center
• The sky
• The moon
• The Sun

As the mass of an object increases, its gravitational attraction decreases.

• TRUE
• FALSE