y9 Conservation of energy

Which statement is true?

• Energy can be created and destroyed.

• Energy can not be created or destroyed.

• Total energy in an open system changes.

100 degrees Celsius is the .............

• heat

• temperature

• energy

• total energy

1000 J is the quantity of .......

• temperature

• heat

• force

If there are 2 cups with 100 cm3 of water of the same temperature.

• The heat in each cup is different

• The heat in each cup is the same

Heat is

• the total energy of particles in a substance

• the maximum energy of particles in a substance

• the minimum energy of particles in a substance

• the average energy of particles in a substance

Temperature is the

• total energy of particles in a substance

• maximum energy of particles in a substance

• minimum energy of particles in a substance

• average energy of particles in a substance

Which of these will happen when energy is conserved?

• The quantity of energy will increase.

• The quantity of energy will stay the same.

• A quantity of energy can be made.

• A quantity of energy can be destroyed.

What happens to the total energy in a closed system?

• The total energy decreases.

• The total energy can be created.

• The total energy increases.

• The total energy remains constant.

What is the SI unit of energy?

• Newton

• Joule

• Calorie

• Watt

What is the principle of conservation of energy?

• Energy can be created from nothing.

• Energy can be transformed but not created or destroyed.

• Energy can be destroyed in a closed system.