Every card in Resources and environment, Year 7: more practice
The whole deck, in order — so you can read it through before your child ever sees it.
- In a food chain, which organisms make their own food using energy from sunlight?
Producers
HintThey are always at the start of the chain.
WhyGreen plants and algae are producers. Everything else in a food chain depends on them for energy.
- What do decomposers, such as fungi and bacteria, do in an ecosystem?
Break down dead material and return nutrients to the soil
HintThink about what happens to a fallen leaf.
WhyWithout decomposers, dead plants and animals would pile up and nutrients would stay locked away.
- In the food chain grass → rabbit → fox, which is the primary consumer?
The rabbit
HintThe grass is the producer; this is the first consumer.
WhyA primary consumer eats a producer. The fox is a secondary consumer because it eats the rabbit.
- If all the foxes are removed from the grass → rabbit → fox ecosystem, what is likely to happen to the rabbit population at first?
It increases
HintWhat no longer eats the rabbits?
WhyWith no predators, rabbits breed and survive in greater numbers, until they may eat so much grass that food runs short.
- Rock slowly dissolved by weak acid in rainwater is an example of which type of weathering?
Chemical weathering
HintThe rock itself changes or dissolves.
WhyLimestone is especially affected by acid rain. Chemical weathering changes the make-up of the rock.
- Tree roots growing into a crack and splitting a rock is an example of which type of weathering?
Biological weathering
HintA living thing is doing the damage.
WhyRoots, burrowing animals and lichens can all help break down rock.
- What is the difference between weathering and erosion?
Weathering breaks rock down where it is; erosion wears it away and carries it off
HintOne happens in place; the other involves movement.
WhyErosion needs a moving agent such as a river, glacier, wave or wind. Weathering has no such agent.
- Why is coal classed as non-renewable even though new coal is still forming?
It takes millions of years to form, far slower than we use it
HintCompare the speed of formation with the speed of use.
WhyA renewable resource is replaced within a human lifetime. Coal forms over millions of years.
- When is timber from a forest a renewable resource?
Only if trees are replanted as fast as they are cut
HintThink about whether new growth keeps pace with felling.
WhyForests regrow, but if they are cut faster than they grow, the resource is used up.
- Which common raw material, dug from beaches and quarries, is the main ingredient of glass?
Sand
HintBeaches are covered in it.
WhyGlass is made by melting sand with other materials such as soda ash and limestone.
1★ KS3-GEOG-RES-0026
2★ KS3-GEOG-RES-0027
3★ KS3-GEOG-RES-0028
4★ KS3-GEOG-RES-0029
5★ KS3-GEOG-RES-0030
6★ KS3-GEOG-RES-0031
7★ KS3-GEOG-RES-0032
8★ KS3-GEOG-RES-0033
9★ KS3-GEOG-RES-0034
10★ KS3-GEOG-RES-0035
Keep what you learn
Here, nothing is saved. In your child’s own sky every card is scheduled — it comes back just before they’d forget it — and the professor who wrote it is one tap away.