Gravity and Kinetic Energy Investigation 2

Front

True or False: Gravity affects the mass of an object.

Back

False

Answer explanation

False. The force of gravity does not affect the mass of an object; mass is a measure of the amount of matter in an object and remains constant regardless of gravitational force.

Front

True or False: Gravity affects the weight of an object.

Back

True

Answer explanation

True. The force of gravity is what gives an object its weight. Weight is the gravitational force acting on an object's mass, so changes in gravity directly affect weight.

Front

Relationship between mass and gravitational attraction between two objects.

Back

The more mass an object has, the greater its gravitational force.

Answer explanation

The correct statement is that the more mass an object has, the greater its gravitational force. This is based on the law of universal gravitation, which states that gravitational attraction increases with mass.

Front

The __________________ of an object does not change when it is taken to another planet.

Back

mass

Answer explanation

The mass of an object is a measure of the amount of matter it contains and remains constant regardless of location, including on different planets. In contrast, weight varies with gravitational pull, making 'mass' the correct choice.

Front

Fill in the blanks: But their __________________ can be different on that planet if the _________________ of the planet is different from that of Earth. Options: mass, mass, weight, weight, weight, mass, mass, weight

Back

weight, mass

Answer explanation

The correct choice is 'weight, mass' because weight depends on the gravitational pull of a planet, which can differ from Earth, while mass remains constant regardless of location.

Front

What is the change in speed per unit of time when Michael pedals faster on his bicycle?

Back

acceleration

Answer explanation

As Michael pedals faster, he experiences a change in velocity over time, which is defined as acceleration. Therefore, the correct answer is acceleration.

Front

A push or pull is

Back

force

Answer explanation

A push or pull is defined as a force. Forces can cause objects to move or change their motion, while weight and gravity are specific types of forces, and acceleration is the result of a force acting on an object.

Front

A unit of mass is

Back

gram

Answer explanation

A unit of mass is defined as a measure of the amount of matter in an object. The correct answer is 'gram', which is a standard unit of mass in the metric system, while gravity, Newton, and weight refer to different concepts.

Front

An attractive force between masses is

Back

gravity

Answer explanation

A force of attraction between masses is known as gravity. It is the natural phenomenon by which all things with mass are brought toward one another, making gravity the correct answer.

Front

The amount of matter in an object

Back

mass

Answer explanation

The quantity of matter in an object is referred to as its mass. Unlike weight, which is the force exerted by gravity on an object, mass is a measure of the amount of matter regardless of location.