Mass & Weight - Gravity

Front

What is gravity?

Back

Gravity is the force that attracts two bodies towards each other. It influences ocean tides, keeps the moon orbiting the Earth, and keeps Earth orbiting the sun.

Front

What does a scale measure?

Back

A scale measures weight.

Front

Which planet is the smallest in our solar system?

Back

Mercury is the smallest planet in our solar system.

Front

How many low and high tides occur in a 24-hour period?

Back

There are 2 low tides and 2 high tides in a 24-hour period.

Front

What causes tides?

Back

Tides are caused by the gravitational pull of the moon and sun on the Earth's ocean waters.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What unit is used to measure mass?

Back

Mass is commonly measured in kilograms (kg).

Front

What unit is used to measure weight?

Back

Weight is commonly measured in newtons (N) or pounds (lbs).

Front

How does gravity affect objects on Earth?

Back

Gravity pulls objects towards the center of the Earth, giving them weight.

Front

What is the gravitational force between two objects dependent on?

Back

The gravitational force between two objects depends on their masses and the distance between them.