Defying Gravity - Crash Course

Front

What causes a ball to fall to the ground after you throw it in the air?

Back

Gravity is the force that pulls objects toward each other, causing them to fall to the ground.

Front

True or False: Gravity is a force.

Back

True. Gravity is a force that attracts objects toward one another.

Front

What is a force?

Back

A force is a push or pull that can change the motion of an object.

Front

True or False: You can see gravity.

Back

False. Gravity is invisible; we can only see its effects.

Front

Who was the scientist who was the first to seriously study gravity over 300 years ago?

Back

Isaac Newton was the scientist who studied gravity and formulated the laws of motion.

Front

What is the definition of gravity?

Back

Gravity is the natural phenomenon by which all things with mass are brought toward one another.

Front

What happens to an object when gravity acts on it?

Back

An object will accelerate towards the center of the Earth or another massive body when gravity acts on it.

Front

What is weight?

Back

Weight is the force exerted by gravity on an object, depending on its mass.

Front

How does mass affect gravity?

Back

The more mass an object has, the stronger its gravitational pull.

Front

What is an example of gravity in everyday life?

Back

When you drop a ball, it falls to the ground because of gravity.