8K EOT Quiz - Transfer of energy (11/12/2024)

Last updated 7 months ago

27 questions

1

Which list of materials shows only insulating materials?

wool, feathers, copper

feathers, wood, carpets

iron, copper, steel

plastic, aluminium foil, wood

Which statement is the best explanation for why many insulating materials contain trapped air?

trapping the air stops energy being transferred by convection

air is a poor conductor

trapped air makes the material lighter

gases are poor conductors and they cannot transfer energy by convection if they cannot move

The surface of which material would reflect infrared radiation the best?

white and dull

black and shiny

white and shiny

grey and dull

Which statement is correct?

dark colours are good emitters and absorbers of radiation

dark colours are good emitters and poor absorbers of radiation

dark colours are poor emitters but good absorbers of radiation

light colours are good emitters and absorbers of radiation

What are the units for measuring power?

joules

watts

volts

kilowatt-hours

How can you find the power of an appliance?

see how hot it gets when switched on

see what voltage it needs

look for the efficiency label

look for the power rating on the label

Which kinds of appliances transfer the most energy?

heaters and cookers

lights

TVs and radios

computers

The efficiency of an appliance is calculated by:

comparing the useful and wasted energies

measuring how much energy is transferred

comparing the useful energy transferred to the total energy supplied

comparing the wasted energy transferred to the total energy supplied

Which of these is NOT a way of trying to reduce energy bills?

increasing the insulation in your home

using more efficient appliances

using appliances with high power ratings

using solar power to heat water

What does 'payback time' mean?

The time it takes to pay off finance on a new appliance

How long a new appliance will last without needing repairs

The time it takes to save enough money on energy bills to pay for a change

The time it takes a new appliance to reduce your energy bills

Freezer A costs £200 and freezer B costs £150. Someone buying freezer A would save £20 per year on energy bills. What is the payback time if someone buys freezer A instead of B?

0.4 years

0.6 years

1.6 years

2.5 years

What are the units for measuring energy?

newtons

degrees Celsius

joules

degrees Fahrenheit

If you leave a cup of hot tea standing in the kitchen for a whole day, what will happen?

No energy will be transferred.

It will gain energy from the air in the kitchen.

Energy will be transferred from the tea to the air until the tea is the same temperature as the air.

Energy will be transferred from the tea to the air in the kitchen, so the tea will end up colder than the air in the kitchen.

The amount of thermal energy in an object depends on three things. Which of these things does it not depend on?

its mass

its colour

its temperature

the material it is made from

Which statement about evaporation is not true?

When some of a liquid evaporates, the liquid left is warmer than before.

Evaporation can happen at any temperature at which the substance is a liquid.

When some of a liquid evaporates, it is the particles moving the fastest that escape and form a gas.

Sweating cools us down when the sweat evaporates.

Infrared radiation can travel through:

transparent objects only.

opaque objects only.

empty space only.

empty space and transparent materials.

When one end of a piece of metal is heated:

the particles vibrate less and so the particles get closer together.

the particles vibrate more and the vibrations are passed from particle to particle.

the energy does not move through the metal.

the particles get bigger.

Solids are better heat conductors than liquids or gases because:

the particles are closer together in gases.

the particles are closer together in liquids.

the particles are closer together in solids.

the particles in a solid cannot move.

Why does the cold air near the ice lolly move downwards?

It is colder and denser than the air further away from it.

It is warmer and denser than the air further away from it.

It is colder and less dense than the air further away from it.

It is warmer and less dense than the air further away from it.

1

The drawing below shows a measuring instrument.
(a) Name this instrument.

1

2

A boy takes a can of lemonade from the fridge and puts the can on the table.
(a) Explain the direction of energy transfer between the can and the air in the room.

1

The boy leaves the can of lemonade on the kitchen table for 6 hours. Suggest what temperature the lemonade will be after 6 hours.

1

The water in this pan is boiling. (a) State the temperature of boiling water.

1

A student is investigating energy transfers using two thermometers. The bulb of one thermometer is painted black. The bulb of the other thermometer is painted silver. Explain which type of energy transfer the student is investigating.

2

The graph shows the results of the experiment. State which line represents the black thermometer. Give one reason for your answer.

1

Which list of materials shows only insulating materials?

wool, feathers, copper

feathers, wood, carpets

iron, copper, steel

plastic, aluminium foil, wood

Which statement is the best explanation for why many insulating materials contain trapped air?

trapping the air stops energy being transferred by convection

air is a poor conductor

trapped air makes the material lighter

gases are poor conductors and they cannot transfer energy by convection if they cannot move

The surface of which material would reflect infrared radiation the best?

white and dull

black and shiny

white and shiny

grey and dull

Which statement is correct?

dark colours are good emitters and absorbers of radiation

dark colours are good emitters and poor absorbers of radiation

dark colours are poor emitters but good absorbers of radiation

light colours are good emitters and absorbers of radiation

What are the units for measuring power?

joules

watts

volts

kilowatt-hours

How can you find the power of an appliance?

see how hot it gets when switched on

see what voltage it needs

look for the efficiency label

look for the power rating on the label

Which kinds of appliances transfer the most energy?

heaters and cookers

lights

TVs and radios

computers

The efficiency of an appliance is calculated by:

comparing the useful and wasted energies

measuring how much energy is transferred

comparing the useful energy transferred to the total energy supplied

comparing the wasted energy transferred to the total energy supplied

Which of these is NOT a way of trying to reduce energy bills?

increasing the insulation in your home

using more efficient appliances

using appliances with high power ratings

using solar power to heat water

What does 'payback time' mean?

The time it takes to pay off finance on a new appliance

How long a new appliance will last without needing repairs

The time it takes to save enough money on energy bills to pay for a change

The time it takes a new appliance to reduce your energy bills

Freezer A costs £200 and freezer B costs £150. Someone buying freezer A would save £20 per year on energy bills. What is the payback time if someone buys freezer A instead of B?

0.4 years

0.6 years

1.6 years

2.5 years

What are the units for measuring energy?

newtons

degrees Celsius

joules

degrees Fahrenheit

If you leave a cup of hot tea standing in the kitchen for a whole day, what will happen?

No energy will be transferred.

It will gain energy from the air in the kitchen.

Energy will be transferred from the tea to the air until the tea is the same temperature as the air.

Energy will be transferred from the tea to the air in the kitchen, so the tea will end up colder than the air in the kitchen.

The amount of thermal energy in an object depends on three things. Which of these things does it **not** depend on?

its mass

its colour

its temperature

the material it is made from

Which statement about evaporation is **not** true?

When some of a liquid evaporates, the liquid left is warmer than before.

Evaporation can happen at any temperature at which the substance is a liquid.

When some of a liquid evaporates, it is the particles moving the fastest that escape and form a gas.

Sweating cools us down when the sweat evaporates.

Infrared radiation can travel through:

transparent objects only.

opaque objects only.

empty space only.

empty space and transparent materials.

When one end of a piece of metal is heated:

the particles vibrate less and so the particles get closer together.

the particles vibrate more and the vibrations are passed from particle to particle.

the energy does not move through the metal.

the particles get bigger.

Solids are better heat conductors than liquids or gases because:

the particles are closer together in gases.

the particles are closer together in liquids.

the particles are closer together in solids.

the particles in a solid cannot move.

Why does the cold air near the ice lolly move downwards?

It is colder and denser than the air further away from it.

It is warmer and denser than the air further away from it.

It is colder and less dense than the air further away from it.

It is warmer and less dense than the air further away from it.

What does this instrument measure?

length

degrees

heat

temperature

A boy takes a can of lemonade from the fridge and puts the can on the table.
(a) Explain the direction of energy transfer between the can and the air in the room.

The boy leaves the can of lemonade on the kitchen table for 6 hours. Suggest what temperature the lemonade will be after 6 hours.

The water in this pan is boiling. (a) State the temperature of boiling water.

The graph shows the results of the experiment. State which line represents the black thermometer. Give one reason for your answer.

In which state of matter does convection occur?

All states of matter

Liquids and gases

Just in gases

Just in solids

What does this instrument measure? 

length

degrees

heat

temperature

In which state of matter does convection occur?

All states of matter

Liquids and gases

Just in gases

Just in solids

8K EOT Quiz - Transfer of energy (11/12/2024)

8K EOT Quiz - Transfer of energy (11/12/2024)

The drawing below shows a measuring instrument. (a) Name this instrument.

A student is investigating energy transfers using two thermometers. The bulb of one thermometer is painted black. The bulb of the other thermometer is painted silver. Explain which type of energy transfer the student is investigating.

Which list of materials shows only insulating materials?

Which statement is the best explanation for why many insulating materials contain trapped air?

The surface of which material would reflect infrared radiation the best?

Which statement is correct?

What are the units for measuring power?

How can you find the power of an appliance?

Which kinds of appliances transfer the most energy?

The efficiency of an appliance is calculated by:

Which of these is NOT a way of trying to reduce energy bills?

What does 'payback time' mean?

Freezer A costs £200 and freezer B costs £150. Someone buying freezer A would save £20 per year on energy bills. What is the payback time if someone buys freezer A instead of B?

What are the units for measuring energy?

If you leave a cup of hot tea standing in the kitchen for a whole day, what will happen?

The amount of thermal energy in an object depends on three things. Which of these things does it **not** depend on?

Which statement about evaporation is **not** true?

Infrared radiation can travel through:

When one end of a piece of metal is heated:

Solids are better heat conductors than liquids or gases because:

Why does the cold air near the ice lolly move downwards?

The drawing below shows a measuring instrument. (a) Name this instrument.

A boy takes a can of lemonade from the fridge and puts the can on the table. (a) Explain the direction of energy transfer between the can and the air in the room.

The boy leaves the can of lemonade on the kitchen table for 6 hours. Suggest what temperature the lemonade will be after 6 hours.

The water in this pan is boiling. (a) State the temperature of boiling water.

A student is investigating energy transfers using two thermometers. The bulb of one thermometer is painted black. The bulb of the other thermometer is painted silver. Explain which type of energy transfer the student is investigating.

The graph shows the results of the experiment. State which line represents the black thermometer. Give one reason for your answer.

What does this instrument measure?

A boy takes a can of lemonade from the fridge and puts the can on the table. (a) Explain the direction of energy transfer between the can and the air in the room.

The boy leaves the can of lemonade on the kitchen table for 6 hours. Suggest what temperature the lemonade will be after 6 hours.

The water in this pan is boiling. (a) State the temperature of boiling water.

The graph shows the results of the experiment. State which line represents the black thermometer. Give one reason for your answer.

In which state of matter does convection occur?

The drawing below shows a measuring instrument.
(a) Name this instrument.

The amount of thermal energy in an object depends on three things. Which of these things does it not depend on?

Which statement about evaporation is not true?

The drawing below shows a measuring instrument.
(a) Name this instrument.

A boy takes a can of lemonade from the fridge and puts the can on the table.
(a) Explain the direction of energy transfer between the can and the air in the room.

A boy takes a can of lemonade from the fridge and puts the can on the table.
(a) Explain the direction of energy transfer between the can and the air in the room.