grade 8 unit 1 lesson 6

What does “biofuel” mean?

• A) Fuel produced from fossils

• B) Liquid fuel produced from plants

• C) Fuel made from seawater

• D) None of the above

What is algae, and what important function does it perform?

• A) A land plant that produces fruit

• B) An animal that provides food

• C) A plant organism that produces oxygen

• D) A rock that absorbs water

Define “energy efficiency.”

• A) Using as much energy as possible

• B) Reducing waste by using less energy

• C) Storing extra energy

• D) Avoiding all forms of energy use

Name an example of an energy-efficient light source.

• A) Incandescent bulbs

• B) LED bulbs

• C) Candles

• D) Neon signs

What does “photosynthesis” refer to?

• A) The process plants use to make food from sunlight

• B) The process animals use to hunt

• C) The movement of water in plants

• D) The creation of sound in plants

Why is hydrogen fuel considered “clean”?

• A) It produces only carbon dioxide

• B) It produces only water vapor

• C) It doesn’t need water to burn

• D) It can be stored easily

What is one drawback of producing hydrogen fuel?

• A) It’s very cheap

• B) It’s easy to store

• C) It’s costly to produce and store

• D) It can be easily produced by anyone

What does “adaptation” mean in the context of climate change?

• A) Completely stopping climate change

• B) Changing to better handle environmental changes

• C) Ignoring the effects of climate change

• D) Making water available in dry areas

Give one example of an adaptation solution for coastal areas.

• A) Planting trees

• B) Seawalls

• C) Building hydroelectric dams

• D) Using solar panels

Why might farmers use drought-resistant crops?

• A) To save water in dry conditions

• B) To increase rainfall

• C) To make plants grow faster

• D) To produce more flowers