7P1 Forces and Energy

Question 1

NOT a type of force

Accepted Answer

Mass

Question 2

What is the correct energy transfer for a generator?

Accepted Answer

Kinetic -> Electrical

Question 3

Which device can be used to measure force?

Accepted Answer

A newtonmeter

Question 4

Which method of heat transfer is this diagram showing?

Accepted Answer

Convection

Question 5

Friction is a good thing when...

Accepted Answer

... you want to slow down, ...you want to change direction

Question 6

An independent variable is what you...

Accepted Answer

Change to see what it does

Question 7

Why doesn't a pendulum swing as high each time?

Accepted Answer

Some energy is lost on every swing.

Question 8

Which factor affects friction?

Accepted Answer

The area of two touching surfaces, The roughness of two touching surfaces, The force between two touching surfaces

Question 9

What is meant by the term resultant force?

Accepted Answer

The overall effect of all the forces

Question 10

Which formula links mass, weight and gravity?

Accepted Answer

Weight = mass x gravity

Question 11

The law of conservation of energy does NOT say that...

Accepted Answer

Energy can be destroyed

Question 12

Not a method of heat transfer

Accepted Answer

Aviation

Question 13

Which force causes a moving car to slow down?

Accepted Answer

Friction, Air Resistance

Question 14

Which force makes a ball fall when dropped?

Accepted Answer

Weight

Question 15

NOT a type of energy

Accepted Answer

Emotional

Question 16

What is wrong with this Sankey diagram

Accepted Answer

More energy has come out than was put in, It violates the natural laws of physics. The end is nigh!

Question 17

Which method of heat transfer is this diagram showing?

Accepted Answer

Conduction

Question 18

Non-renewable energy...

Accepted Answer

is fossil fuels, will eventually run out

Question 19

If there are no forces acting on an object it will

Accepted Answer

Continue moving constant velocity

Question 20

Most of the energy is transferred usefully

Accepted Answer

False

Question 21

Energy efficiency is...

Accepted Answer

The % of the input energy that is transferred usefully

Question 22

A plane has a weight of 1,000N. The force from the engines is 600N. Will the place take off?

Accepted Answer

No

Question 23

Kids hate learning

Accepted Answer

GCSE energy names

Question 24

What units are used to measure weight?

Accepted Answer

N - it's a force

Question 25

What is the input energy for a common refrigerator?

Accepted Answer

Electricity

Question 26

Forces are vectors. This means they have...

Accepted Answer

A magnitude and direction

Question 27

To make a test fair you should...

Accepted Answer

Only change the independent variable

Question 28

An unbalanced force acting on an object can NOT cause it to...

Accepted Answer

Get heavier

7P1 Forces and Energy

Questions 28

7P1 Forces and Energy

Questions 28