Quiz on Gravity and Forces

What force causes objects to fall towards the Earth's surface?

• Friction
• Magnetism
• Gravity
• Tension

Who is credited with discovering the concept of gravity after observing a falling apple?

• Einstein
• Newton
• Galileo
• Aristotle

What is the direction of the weight force on an object on Earth's surface?

• Upwards
• Sideways
• Towards the center of the Earth
• Away from the Earth

How does an object's weight change as it moves farther from Earth's surface?

• It increases
• It decreases
• It stays the same
• It becomes zero

What fraction of an object's Earth weight would it have at a height equal to Earth's radius?

• 1/2
• 1/3
• 1/4
• 1/6

What is the SI unit for measuring weight?

• Kilogram (kg)
• Newton (N)
• Joule (J)
• Meter (m)

How does the Moon's gravity compare to Earth's gravity?

• It's stronger
• It's the same
• It's about 1/6 of Earth's gravity
• There is no gravity on the Moon

What did Newton conclude about gravitational forces in the universe?

• They only exist on Earth
• They exist between all bodies in the universe
• They only affect large objects
• They don't exist in space

What is the direction of the weight force relative to Earth's surface at any location?

• Parallel to the surface
• At a 45-degree angle
• Perpendicular to the surface
• It varies depending on location

Which of these is NOT affected by Earth's gravitational force?

• A book on a table
• A falling apple
• The Moon
• Light