Physics test 2015

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  • Created by: dmcgrath
  • Created on: 05-05-16 18:02
The battery stores ............... energy which is transferred into electrical energy.
Chemical
1 of 17
Why are metals good conductors of energy?
Because they contain free electrons.
2 of 17
How would wearing oven gloves affect the rate of energy transfer to a persons hand compared with not wearing girl gloves?
The rate of energy transfer would be lower
3 of 17
What two factors determine the amount of energy transfer by an electric oven?
1. Power 2. Time
4 of 17
The specific heat capacity of a substance is the amount of energy required to change the ............ of one kilogram of the substance by one degree Celsius.
Temperature
5 of 17
To calculate the specific heat capacity of a material, the mass of the material needs to be measured. State the name of a measuring instruments need to measure the mass.
Scales
6 of 17
The cooling fins are a ....... colour because that makes them good emitters of infrared radiation.
Darker
7 of 17
The larger surface area of the cooling fins allows the air around the can-chiller to gain energy quickly and rise transferring energy by ..........
Convection
8 of 17
Energy can be transferred usefully, stored or dissipated, but cannot be ........ or destroyed.
Create
9 of 17
The temperature of the can of drinks decreases while it is in the can-chiller. What happens to the temperature of the air around the cooling fins?
It increases
10 of 17
Suggest one reason why a solar thermal power station is built in a hot desert
High levels of infrared radiation from the sun.
11 of 17
Give one reason why wind turbine do not generate electricity all the time?
The wind is unreliable
12 of 17
Give one advantage of using wind turbine to generate electricity compared with using fossil fuels
Wind is a renewable energy source.
13 of 17
What is meant by the term U-value?
How effective a material is as a insulated.
14 of 17
How is the U-value affected by increasing the amount of insulation?
The U-value decreased
15 of 17
The outside temperature was the same on both days. Give one reason why this was important.
So a comparison can be made.
16 of 17
The statement about heating is not valid in some cases.
People have different types of insulation.
17 of 17

Other cards in this set

Card 2

Front

Why are metals good conductors of energy?

Back

Because they contain free electrons.

Card 3

Front

How would wearing oven gloves affect the rate of energy transfer to a persons hand compared with not wearing girl gloves?

Back

Preview of the front of card 3

Card 4

Front

What two factors determine the amount of energy transfer by an electric oven?

Back

Preview of the front of card 4

Card 5

Front

The specific heat capacity of a substance is the amount of energy required to change the ............ of one kilogram of the substance by one degree Celsius.

Back

Preview of the front of card 5
View more cards

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