MP 1 Test 1

__________causes a ball to fall back to the ground after tossing it into the air

• Potential Energy

• Gravity

• Mechanical Energy

• Wind Energy

When a person blows across a bottle of water, a sound is made. Which of the following directly caused this sound?

• Air vibrates inside of the bottle

• Warm air heats the inside of the bottle.

• Air moves away from the outside of the bottle

• Warm air touches cold water inside of the bottle

When you hit a ball with a baseball bat, what happens?

• Gravity makes the ball go the opposite direction.

• The kinetic energy is transferred to the potential energy.

• The motion of the bat transfers to the ball to make the ball move.

• The bat flies away.

Look at the diagram of the roller coaster above. The cars on the roller coaster are in different positions.

Place the cars in order of the amount of kinetic energy that they have on this rollercoaster. Starting with the most kinetic energy to the least amount of kinetic energy.

• 1,3,2

• 1,2,3

• 2,3,4

• 5,4,1

Which car has potential energy? How do you know?

• Car 2 because it's going down the fastest.

• Car 1 because it is not moving but has the potential to move down.

• Car 4 because it is moving

• Car 3 because it is slowly moving.

Four friends were talking about energy transfer and electric current. They each had different ideas. This is what they said:

Jack: I think energy from a moving object can be transferred by electric current.

Jumon: Jack, you are wrong. It’s the other way around. I think energy from electric current can be transferred to a moving object.

Ida: You are both right. Energy can be transferred either way.

Mayumi: All of you are wrong. Energy is not transferred by electric current or moving objects.

Who has the most correct answer?

• Jack

• Jumon

• Mayumi

• Ida

Which action allows electrical energy to change to another form of energy?

• A. sleeping in a cold room

• B. cooking food on an open campfire

• C. turning on a light in a dark room

• D. playing violin in a music group