C2 4.7 Recycling Flashcards Preview

SHHS - Science - C2.4 The Earth - Year 8 > C2 4.7 Recycling > Flashcards

Flashcards in C2 4.7 Recycling Deck (6)
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What does recycling mean?

Collecting and processing materials that have been used so that they can be used again


Give two advantages of recycling

Resources such as aluminium will last longer; energy is saved because it takes less energy to recycle than to extract resources; waste and pollution is reduced


Give a disadvantage of recycling

Separating rubbish is a nuisance; lorries that collect recycling use fuel and create pollution


What is an independent variable?

A variable that you can control


What is a dependent variable?

A variable that changes when you change something else


What is the variable called that must be kept the same throughout an experiment?

Control variable