Key Stage 2
Meaning
Hardness is how difficult it is to change the shape of an object with a force.
About Hardness
- Objects which need a lot of force to change their shape are called hard.
- Object which need very little force to change their shape are called soft.
- Very hard objects are often Brittle which means they can break when you push them with a big force.
Examples
Hard Materials
| Brick
|
Glass
|
|
|
|
Hard Materials
| Rock
|
Metal
|
|
|
|
Soft Materials
| Fabric
|
Rubber
|
|
|
|
Key Stage 3
Meaning
Hardness is how difficult it is to change the shape of an object with a force.
About Hardness
- Objects which need a lot of force to change their shape are called hard.
- Object which need very little force to change their shape are called soft.
- Very hard objects are often Brittle which means they can break when a large force is applied.
Key Stage 4
Meaning
Hardness is how difficult it is to change the shape of an object with a force.
About Hardness
- Objects which need a lot of force to change their shape are called hard.
- Object which need very little force to change their shape are called soft.
- Very hard objects are often Brittle which means they can break when a large force is applied.
