recycling

Question 1

how are raw materials often obtained?

Answer 1

by quarrying or mining

Question 2

what is the disadvantage of quarrying?

Answer 2

produces large amounts of dust and destroys habitats

Question 3

what is the disadvantage of mining?

Answer 3

release harmful chemicals into the environment

Question 4

it takes a lot of _____ to turn raw materials into useful products?

Answer 4

it takes a lot of energy to turn raw materials into useful products

Question 5

why is it important to reduce our needs for raw materials by reusing or recycling?

Answer 5

helps to save limited resources and energy, and reduces amount of waste we produce and have a less harmful effect on environment

Question 6

how can we recycle glass bottles?

Answer 6

crush and melt them to make different glass products like jars

Question 7

what can plastic bottles be recycled to make?

Answer 7

fleece jackets and carpets

Question 8

how do we recycle metals?

Answer 8

melt them and recast them into different products

Question 9

what is one of the problems with recycling metals?

Answer 9

depending on properties of final product, different metals need to be seperated before being recycled

Question 10

scrap steel can be added to ___ from a ___ _____?

Answer 10

scrap steel can be added to iron from a blast furnace