Energy Transfer and Conversion

Energy Transfer and Conversion

ENERGY CONVERSION EXAMPLE 1

• Change from one type of energy to another.

• When a person drops a ball GE changes to KE (the object moves after it is dropped) and when that same ball hits the floor the KE changes to EE (the ball deforms)

ENERGY CONVERSION EXAMPLE 2

• Change from one type of energy to another.

• The amount of PE and KE will change as the roller coaster car continues down the track.

Multiple Choice

Which point on the Roller Coasters path does the cart have the least potential energy?

• W

• X

• Y

• Z

Multiple Choice

Which diagram models the position of a soccer ball when it has the greatest amount of gravitational potential energy?

Multiple Choice

The diagram shows a cart moving freely along a track. What happens to the energy of the cart as it moves from point A to point B on the diagram?

• Potential energy is transformed to kinetic energy.

• Kinetic energy is transformed to potential energy.

• Both potential energy and kinetic energy stay the same.

Multiple Choice

A girl throws a ball into the air.  At which point does the ball have the greatest potential energy?

• 1
• 2
• 3
• 4

Multiple Select

Which two points on the track have more potential energy than kinetic energy?

• W

• X

• Y

• Z

ENERGY TRANSFER

• Energy is moved from one object to another.

• Energy transfer occurs in systems.

• Energy moves from the source object to the receiver object

• This is not the same as conversion!

Multiple Choice

Choose the statement below that best describes the transfer of energy to the soccer ball during a penalty kick.

• GE is transferred from the player to the soccer ball when contact is made between the players foot and the ball.

• KE can not be transferred to the ball because it has too much friction keeping it in place on field.

• KE is transferred from the player to the soccer ball when contact is made between the players foot and the ball.

• Energy transfer does not happen in sports especially soccer.

Multiple Select

When the boy hits the ball, what type of energy is transferred to the ball from the bat?

• chemical

• electrical

• kinetic

• potential

Multiple Choice

What type of energy is transferred from the golf club to the golf ball?

• potential

• kinetic

• chemical

• gravitational

Multiple Choice

When the red curling stone hits the yellow curling stone what is happening in relationship to energy.

• energy is created by the yellow stone when the red stone hits it

• energy is destroyed by the red stone hitting the yellow stones

• energy is transferred from the red stone to the other stones

Multiple Choice

A hockey player uses her stick to hit a hockey puck. Which statement describes the overall energy transfer?

• Potential Energy is transferred from the stick to the puck.

• Kinetic Energy is transferred from the player to the puck.

• Kinetic Energy is transferred from the puck to the player.

• Potential Energy is transferred from the stick to the player.

Multiple Choice

The energy going into an energy transfer is always equal to the energy coming out. True or False?

• True

• False