Give an example of low friction
sliding on ice / a slide in a playground.
Which soil is BEST for plants?
Silt
Rock
Loamy
Clay
What happens when the same poles meet?
The same poles repel and push away from each other.
What does gravity do?
Makes objects float in the air
Stops objects from moving
Pushes objects away from Earth
Pulls objects toward the ground
What happens when two objects fall?
They fall at the same speed (if there is no air resistance), even if one is heavier.
Why do car tyres have high friction?
Car tyres have high friction so they can grip the road and not slip.
How can humans cause erosion? Humans cause erosion by ______ For example, ______
Humans cause erosion by cutting trees or building. For example, when trees are cut down, the soil can move easily.
What is soil made of?
Only rocks
Only water
Only sand
Rock, air, water, and organic matter
What happens when opposite magnet poles meet?
Opposite poles attract and pull towards each other.
Give an example of a pull
pulling a drawer / pulling a rope
What do tree roots do?
Remove soil
Dry soil
Hold soil in place
Give an example of a push
pushing a door open / pushing a chair.
How many main types of rocks are there?
2
1
3
What is soil erosion?
Soil moving away
Soil growing
Soil turning to rock
Soil drying
Which is the best example of friction?
A person standing still
A ball flying through the air
A magnet pulling metal
A book sliding and slowing down on a table
Give an example of high friction
car tyres on a road / walking on rough ground
Which soil is best for plants?
Sand
Loam
Rock
Clay
What is a force?
A type of energy only found in magnets
A force only happens when objects stop
Something that only makes objects move fast
A push or pull on an object
Why does cutting down trees cause erosion? Trees help because ______ Without trees, ______
Trees help hold the soil with their roots. Without trees, the soil can be moved by wind or water.