Which energy transformation below occurs in a blow dryer?

• electrical ----> thermal

• electrical -----> chemical

• chemical -----> thermal

• thermal ------> electrical

Which is an example of kinetic energy?

• A soccer ball is lying on the ground.

• A person is standing in line.

• A roller coaster is sitting at the top of a hill.

• Water is flowing over a dam.

Conservation of energy means that

• energy can be created but not destroyed

• energy can be destroyed but not created

• energy can be both created and destroyed

• energy can be neither created nor destroyed

Tags

NGSS.MS-PS3-5

Kinetic energy can be described as

• energy in motion

• stored energy

• a chemical reaction

• connected energy

Tags

NGSS.HS-PS3-2

Which is the best example of an object with only potential energy?

• water being poured out of a pitcher

• a ball being thrown across a field

• a boulder resting on top of a cliff

• a boat sailing through the water

Tags

NGSS.MS-PS3-2

Which variables affect kinetic energy?

• pressure and volume

• velocity and mass

• weight and height

• temperature and weight

Tags

NGSS.MS-PS3-1

Sammy studied kinetic and potential energy by observing apples on a tree during a field investigation. What type of energy do the apples on the tree have?

• elastic potential energy

• mechanical energy

• gravitational potential energy

• sound energy

If a green golf ball is dropped from a height of 7 feet and a yellow golf ball is dropped from a height of 12 feet, which ball has greater potential energy before it is released?

• yellow

• green

• Both have the same amount of potential energy.

• Neither will have more potential energy than the other.

Tags

NGSS.MS-PS3-2

When a roller coaster reaches the bottom of a steep slope, it has-

• low PE and high KE

• high PE and low KE

• low PE and low KE

• high PE and high KE

Tags

NGSS.MS-PS3-5

A roller coaster is an example of a system with mechanical energy.

• True

• False