Energy resources and transfer YEAR 9

Question 1

Mega-

Answer 1

Million

Question 2

Giga-

Answer 2

Billion

Question 3

Tera-

Answer 3

Trillion

Question 4

Law of conservation

Answer 4

Energy can be transferred from one source to another but can’t be created or destroyed

Question 5

Why is defrosting a chicken wearing a woolly jumper a bad idea

Answer 5

The jumper is an insulator, so it keeps the cold inside and prevents thermal energy from entering

Question 6

Specific heat capacity

Answer 6

Energy to heat 1kg of material by 1 degree

Question 7

Equation involving
P.D power and current

Answer 7

Power = P.D x Current

Question 8

Name 3 non renewable energy sources

Answer 8

Coal
Oil
Gas

Question 9

Dependant variable

Answer 9

What we measure

Question 10

Independent variable

Answer 10

What we change

Question 11

Scalar

Answer 11

magnitude

Question 12

Vector

Answer 12

magnitude and direction

Question 13

Give 2 examples of scalar quantities

Answer 13

Temperature
Mass
Speed
Distance

Question 14

Give 2 examples of vector quantities

Answer 14

Velocity
displacement
Momentum

Question 15

Why does a higher temperature make a hollow ball bounce higher

Answer 15

Particles move more and collide with walls of ball
Pressure increases
Ball bounces higher

Question 16

Equation involving
energy transfer, power and time

Answer 16

Power = energy/time

Question 17

Micro-

Answer 17

x10*-6
Millionth

Question 18

Nano-

Answer 18

Billionth
x10*-9

Question 19

Pico-

Answer 19

x10*-12
Trillionth