Gravity

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, commonly experienced as the force that pulls objects towards the Earth.

Front

Who formulated the laws of motion and gravity?

Back

Sir Isaac Newton formulated the laws of motion and the law of universal gravitation.

Front

What is the SI unit of weight?

Back

The SI unit of weight is the Newton.

Front

What does Newton's first law of motion state?

Back

An object in motion will continue in motion unless acted upon by an unbalanced force.

Front

What is the relationship between mass and weight?

Back

Weight is the force of gravity acting on an object's mass.

Front

What is an independent variable in an experiment?

Back

An independent variable is the factor that is changed or controlled in an experiment to test its effects on the dependent variable.

Front

What is a hypothesis?

Back

A hypothesis is a proposed explanation made on the basis of limited evidence as a starting point for further investigation.

Front

What is the effect of gravity on the atmosphere?

Back

Gravity holds the atmosphere in place around the Earth.

Front

What is the formula for calculating weight?

Back

Weight = Mass x Gravity (W = m x g).

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.