Earth's Resources

Question 1

What are the 4 spheres of the Earth?

Answer 1

Atmosphere
Hydrosphere
Lithosphere
Biosphere

Question 2

What is the atmosphere?

Answer 2

Atmosphere - layer of gases above Earth’s surface
- eg. air

Question 3

What is the hydrosphere?

Answer 3

Hydrosphere - all the water on Earth
- eg. water

Question 4

What is the lithosphere?

Answer 4

Lithosphere - solid outer part of the Earth
- eg. rocks
- eg. minerals
- eg. fossil fuels
- eg. soil

Question 5

What is the biosphere?

Answer 5

Biosphere - parts of the Earth where living things exist

Question 6

What is a resource in science?

Answer 6

• In science a resource is any source (or supply) from which something useful can be obtained to meet a need of humans (or other living things)
• A resource is usually a material substance but can be a form of energy

Question 7

Is a resource man-made or natural?

Answer 7

Can be either

Question 8

What are some examples of natural resources?

Answer 8

• rocks for building eg. sandstone, marble
• minerals in rocks eg. irone ore, copper ore
• fossil fuels for energy eg. coal, natural gas
• soil for farming
• air for oxygen to breathe
• water for drinking, washing and farming
• sunlight for energy, growing plants
• living things eg. trees for wood, paper

Question 9

What are some examples of man-made resources

Answer 9

• glass from sand to make windows, bottles
• plastic to make clothing, chairs and pens
• concrete
• paper
• natural fibres like wool from sheep and cotton plant for clothing

Question 10

What are non-renewable resources?

Answer 10

A non-renewable resource is a resource that is being used up faster than it is being replenished. This is because it usually takes longer than human lifetime to be replenished

Question 11

What are renewable sources?

Answer 11

A renewable resource is a resource that is being naturally replenished as fast as it is being used up. This is because it takes much less time than human lifetime to be replenished

Question 12

What are examples of non-renewable sources?

Answer 12

• rocks
• fossil fuels (coal, oil, natural gas)
• minerals
• soil for farming
• living things (trees)

Question 13

What are examples of renewable sources?

Answer 13

• air/wind
• water/wave
• sunlight
• living things (sheep, cotton plant)

Question 14

What are the 3 different types of rocks?

Answer 14

Metamorphic
Igneous
Sedimentary

Question 15

What is a metamorphic rock?

Answer 15

Metamorphic rock is formed when rock is put under high heat and high pressure or hot minerals

Question 16

What is an igneous rock?

Answer 16

Igneous rock is formed when molten, hot rock cools and sets. This is known as igneous rock

Question 17

What is a sedimentary rock?

Answer 17

Sedimentary rocks are formed when pieces of broken-down rock that used to be whole break

Question 18

What are fossils?

Answer 18

Fossils are the preserved remains of plants and animals whose bodies were buried in rocks