# Target sheets 7K - DOC

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```					         Name…….……………………………………….………………….………                                        Date…………………..

Self Assessment: Forces and their effects
As you progress through the unit colour each statement red, amber or green to show how well you understand it:
I can do
During this topic you should be able to:                                                               this very
I need to do
more work
well
on this
use a force meter accurately and include correct units in any measurements made.
identify forces such as friction upthrust and weight
recognise that friction can slow things down
recognise that upthrust pushes up and weight pulls down
identify the direction in which different forces act
explain the difference between mass and weight, giving examples
describe what is meant by speed
use the idea of unbalanced forces to explain how a force can alter the direction of a
moving object and/or its speed.
describe the forces acting on stationary objects and objects travelling at a constant
speed
describe some ways of reducing the effect of friction.
explain why friction is useful in some situations
use the idea of unbalanced forces to explain how a force can change the shape of a
stationary object.
identify and explain which variables need to be kept constant in order to obtain
reliable data.
If you have progressed further in the unit you should also be able to:
describe how weight is caused by gravity
explain how the weight of an object will differ on Earth compared to the Moon
use the idea that forces have size (magnitude) and direction to describe situations
where forces are balanced.

My performance in this unit:
The one thing that I am really going to focus on in this unit is:

__________________________________________________________
Post unit review:
One thing that I have done particularly well at or could answer any question on:
__________________________________________________________________

The one thing that I need to focus on more carefully in the future is:
__________________________________________________________________
Key words for the unit.
Match the definitions to these key words from key stage 2:
The downward force acting on an object due to gravity pulling on its
Newtons (N)            mass. Measured in Newtons.
When a force acting in any direction is not exactly cancelled out by
upthrust
an equal force acting in the opposite direction.
gravity                A measure of the amount of matter contained in an object.
weight                 Measured in grams.
mass                   Units that force is measured in.
A measure of how much space an object takes up.
volume
The attractive force between masses. On Earth this force pulls all
balanced forces        objects towards the centre of the earth.
unbalanced forces      The force that acts upwards on an object that is in a liquid.
When the effects of a force in any direction is exactly cancelled
out by an equal force acting in the opposite direction.
Focus words for this unit:
Write in notes or make a drawing to help you remember what they do: try to include
units where you can!
air resistance
friction
lubricant
displace
density
speed
stopping
distance

For those of you who have really understood the work and gone on a bit further you
might have met the additional phrase listed below. If you have try to add some notes