EduNinjaThe diagram shows a pan used for cooking food.
Which row is correct for the materials used to make the base of the pan and the handle of the pan?
base of pan
handle of pan
good thermal conductor
good thermal conductor
good thermal conductor
poor thermal conductor
poor thermal conductor
good thermal conductor
poor thermal conductor
poor thermal conductor
A power station burns waste materials from farm crops to generate electricity.
The power station uses some of its waste thermal energy to heat water for houses in a nearby town.
State one problem of using waste energy in this way if the power station is far from the town.
Suggest a way of reducing this problem.
A solar panel is mounted on the roof of a house. Fig. 4.1 shows a section through part of the solar panel.
Fig. 4.1
A pump makes water flow through the copper pipes. The water is heated by passing through the solar panel.
Select and explain three features of the solar panel that maximise the final temperature of the water.
A solar panel is mounted on the roof of a house. Fig. 4.1 shows a section through part of the solar panel.
Fig. 4.1
A pump makes water flow through the copper pipes. The water is heated by passing through the solar panel.
Select and explain three features of the solar panel that maximise the final temperature of the water.
A teacher shows his class a polystyrene cup. The polystyrene is a thick plastic with lots of tiny air bubbles in it.
He asks the class why the cup is so good at keeping a hot drink warm. Three suggestions are made.
1 It contains air which is a poor thermal conductor.
2 The air is trapped in tiny bubbles so very little convection is possible.
3 The plastic is a poor thermal conductor.
Which suggestions are correct?
1, 2 and 3
1 and 2 only
1 and 3 only
2 and 3 only
The diagram shows a pan used for cooking food.
Which row is correct for the materials used to make the base and the handle of the pan?
base of pan
handle of pan
good thermal conductor
good thermal conductor
good thermal conductor
poor thermal conductor
poor thermal conductor
good thermal conductor
poor thermal conductor
poor thermal conductor
Four cups A, B, C and D contain hot coffee.
Which cup keeps the coffee warm the longest?
the outside
surface of the cup
the top of the cup
black
covered with a lid
black
no lid
white
covered with a lid
white
no lid
The diagram shows a pan used for cooking food.
Which row is correct for the materials used to make the base and the handle of the pan?
base of pan
handle of pan
good thermal conductor
good thermal conductor
good thermal conductor
poor thermal conductor
poor thermal conductor
good thermal conductor
poor thermal conductor
poor thermal conductor
The diagram shows a pan used for cooking food.
Which row is correct for the materials used to make the base and the handle of the pan?
base of pan
handle of pan
good thermal conductor
good thermal conductor
good thermal conductor
poor thermal conductor
poor thermal conductor
good thermal conductor
poor thermal conductor
poor thermal conductor
The diagram shows a pan used for cooking food.
Which row is correct for the materials used to make the base and the handle of the pan?
base of pan
handle of pan
good thermal conductor
good thermal conductor
good thermal conductor
poor thermal conductor
poor thermal conductor
good thermal conductor
poor thermal conductor
poor thermal conductor