Changing shape: plan and do | Science | Quizalize & Oak National Academy

Starter quiz

Why is wood a suitable material for making a chair?
- Wood is from trees.
- Wood is not bendy. ✓
- Wood is not waterproof.
Which of these is a property of materials?
- gloves
- wool
- stretchy ✓
What does stretchy mean?
- A material that is stretchy does not allow water to pass through it.
- A material that is stretchy can be pulled to make it longer. ✓
- A material that is stretchy does not allow light to pass through it.
Which of these objects is made from a stretchy material?
- a book
- a hair tie ✓
- a bin
Which of these objects should be made from a stretchy material?
- a swimming costume ✓
- a table
- a glass
What would scientists need in order to test materials to find out if they are stretchy?
- a torch
- a ruler ✓
- a jug of water

Which of these photographs shows dough that has been squashed?
- dough 1
- dough 2
- dough 3 ✓
True or false? When we bend a material, we press it to make it thinner and flatter.
- True
- False ✓
Which of these photographs shows dough that has been twisted?
- dough 1 ✓
- dough 2
- dough 3
What do we do when we stretch something?
- We hold the ends of it and turn them in opposite directions lots of times.
- We can pull it to make it longer or change its shape. ✓
- We push or pull it to add a curve.
Match each action to the correct description.
- twist
  
  ⇔
  
  Hold the ends and turn them in opposite directions lots of times. ✓
- stretch
  
  ⇔
  
  Pull it to change its shape. ✓
- squash
  
  ⇔
  
  Press on it to make it flatter and thinner. ✓
- bend
  
  ⇔
  
  Put a curve in it so it is not straight. ✓
What do scientists do to find out which materials change shape?
- a test ✓
- a graph
- a table

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Materials can be squashed by pressing on them to change their shape.
Materials can be bent by pushing or pulling a straight shape into a curve or an angle.
Materials can be twisted by holding each end and turning them in opposite directions.
Materials can be stretched by pulling them to change their shape.
Scientists can plan and test how squashing, bending, twisting and stretching can change the shape of some materials.

Children may think that all objects that can be squashed, bent, twisted or stretched may return to their previous shape (elasticity).

Opportunities to explore the impact of squashing, bending, twisting and stretching different materials.

Squash - You can squash something by squeezing or pressing on it.
Bend - To bend something is to curve it so that it is not straight.
Twist - When you twist something, you hold each end and turn them repeatedly.
Stretch - When you stretch something, you pull it to change its shape.
Material - A material is what an object is made from. An object can be made from more than one material.