Forces - Year 7

What is a force?

• A force is a push or pull that can change the shape of something, its speed, or the direction it is moving in.

• Electricity, heat and sound

• A force changes the colour and speed of most things

• A force is something that changes somethings speed by touching it

Select all the contact forces

• friction, air-resistance, water-resistance, upthrust & applied force

• Air-resistance, water resistance, friction, magnetism

• Magnetism, static electricity, gravity

• friction, air-resistance, water-resistance, upthrust, gravity & applied force

Select the non-contact forces

• static electricity, upthrust, magnetism

• magnetism, static electricity, gravity

• gravity, air-resistance, static electricity

• static electricity, magnetism, scoliorenism, gravity

A force is measured in

• Jules (J)

• Ampere (A)

• Newton (N)

• Hooke's (Hk)

Select the option that is TRUE

• A force has a direction and size

• A force has a direction, but not size

• A force has a direction, size and speed

• A force has direction and speed, but not size

True or False:
Weight is measured in grams or kilograms (kg)

• True

• False

True or False:
Mass is the amount of matter that makes up an object, and is measured in grams or kilograms

• True

• False

If something is stretched it is...

• ... made longer

• ... made shorter

If something is compressed it is...

• made longer/bigger

• made shorter/smaller

what do we call the difference between a springs original length and its stretched length?

• expression

• extension

• exposition

• elasticity