Unit 3 Review

Which of the following occurs during an energy transformation?

• Energy is destroyed

• New energy is created

• Energy changes form

• Matter is created from energy

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-5

A car, powered by gas, goes up a hill from point X to point Y. What energy transformation must occur in the car’s engine to move it up the hill?

• Chemical energy into mechanical energy

• Electrical energy into chemical energy

• Heat energy into chemical energy

• Mechanical energy into nuclear energy

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

Which of these types of energy conversions occur in a battery-powered flashlight?

• Thermal to mechanical to electric

• Light to electrical to chemical

• Thermal to chemical to mechanical

• Chemical to electrical to light

The main purpose of the fan below is to transform electrical energy into

• Light energy

• Chemical energy

• Mechanical energy

• Thermal energy

Which of the words below best describes the process occurring at A?

• Conduction

• Convection

• Radiation

• None of the above

Tags

NGSS.MS-PS1-4

Which of the words below best describes the process occurring at B?

• Conduction

• Convection

• Radiation

• None of the above

Which of the words below best describes the process occurring at C?

• Conduction

• Convection

• Radiation

• None of the above

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

During a warm summer day, a car became extremely hot. When a student went to open the car door, he burned his fingers. What two forms of energy were responsible for the student burning his fingers?

• radiation and conduction

• conduction and convection

• radiation and electricity

• convection and radiation

Students were investigating the movement of thermal energy. The students heated a metal block to a temperature of 45°C. The block was placed into a beaker of water at a temperature of 25°C. What is the expected outcome of the experiment?

• The water absorbs all the heat from the block until it reaches 45°C.

• The block cools, and the water warms, as cold moves from the water to the metal block until they are the same temperature.

• The block cools, and the water warms, as thermal energy in the block is destroyed by the cold water.

• The block cools, and the water warms, as thermal energy moves from the block to the water until they are the same temperature.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of the following statements best describes what happens in a cup of liquid and ice?

• The heat is transferred from the liquid to the ice.

• The cup and lid will prevent the ice from melting.

• The liquid will freeze if enough ice cubes are added.

• The ice will stay frozen for at least 8 hours.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3