7th Grade Energy Transfer Test Review

What kind of energy does this device use?

• Mechanical

• Electrical
• Thermal
• Potential

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

What kind of energy is represented in this picture?

• Thermal
• Potential
• Sound

• Mechanical

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following situations provides evidence that energy is being transferred?

• one object is hotter than another object

• one object pushes another object over a distance

• one object is connected physically to another object

• one object has a greater mass than another object

Tags

NGSS.MS-PS3-5

Which of the following is an example of mechanical energy?

• a golfer hitting a ball

• electricity being stored in a battery

• the sun melting an ice cube

• water being warmed on the stove

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1

A movable pulley reduces the amount of force needed to lift a load and makes what other change?

• reduces the time that the load moves

• decreases the mass of the moving load

• reverses the direction the rope is being pulled

• increases the distance the rope is pulled

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A heat lamp that warms chicken eggs is an example of energy being transferred in what two forms?

• mechanical and electrical

• electromagnetic and thermal

• electrical and thermal

• mechanical and thermal

Tags

NGSS.MS-PS3-3

What is the disadvantage of using an inclined plane to lift a heavy object?

• the object must be moved a greater distance.

• it takes less effort to move the object

• many objects are difficult to lift straight up

• heavy objects usually take up more space

A circuit consists of a battery, a wire, a switch and a lightbulb. Where does the electrical energy come from?

• the wire

• the switch

• the lightbulb

• the battery

Which of the following is an example of a compound machine?

• a hammer

• a wheelchair ramp

• a pair of scissors

• a bicycle

The advantage of using an inclined plane is to reduce the

• force needed to lift the heavy object

• time needed to load many objects

• work being done while moving objects

• amount of friction affecting the objects

Tags

NGSS.MS-PS2-2