Understanding Gravity

What keeps the planets in our Solar System together?

• The Earth's gravity

• The stars' gravity

• The Moon's gravity

• The Sun's gravity

How does gravity act between two objects?

• Through sound waves

• Via a gravitational field

• By electromagnetic waves

• Through direct contact

What happens to the gravitational force as the distance between two objects increases?

• It becomes stronger

• It fluctuates randomly

• It remains the same

• It becomes weaker

Why don't we see two tennis balls attracting each other due to gravity?

• Their masses are too small

• They are too far apart

• They are moving too fast

• They are in a vacuum

What is the main reason we don't notice gravitational attraction between everyday objects?

• The gravitational force is too weak

• The gravitational force is too strong

• The objects are too large

• The objects are too far apart

What happens to the force of gravity when you climb a mountain?

• It disappears completely

• It becomes significantly weaker

• It remains almost the same

• It becomes significantly stronger

Why do astronauts in the ISS appear to float?

• They are weightless

• There is no gravity in space

• They are in free fall

• They are moving too fast

What percentage of Earth's gravity do people in the ISS experience?

• 80-90%

• 50-60%

• 30-40%

• 10-20%

What would happen to the ISS if there was no gravity?

• It would orbit the Earth

• It would float away into space

• It would remain stationary

• It would crash into the Earth

How is gravity described in terms of its interaction between masses?

• As an attractive force

• As a repulsive force

• As a neutral force

• As a contact force