m2 energy sources

Which of these is not currently a source of usable energy?

• The Sun

• The Moon

• Heat from within Earth's crust

• Running water

What adjective describes rock that contains tiny holes (holes in which oil gas or water can accumulate)?

Which of the following substances do photosynthesising organisms produce?

• Hydrocarbons

• Carbohydrates

• Carbon

• Hydrogen

Which of these is an example of biomass energy?

• A solar panel

• A wood-burning stove

• A hydroelectric dam

• An electric car

The image shows parts of the combustion reaction. Drag and drop the substances into their correct positions.

b

c

carbon dioxide

energy

hydrocarbon

carbohydrate

sunlight

Where would you be likely to find a generator?

• At a power plant that powers an entire town

• Inside a coal-burning stove

• In the furnace that heats your school

• In your car's gas tank

What can you infer about fossil fuels from their name?

• They've been buried in Earth's crust for millions of years

• They emit harmful gases when burned

• They're the most abundant energy source on the planet

• They're used to make gasoline

Which part of the diagram represents carbohydrate?

Which part of the diagram represents the process of incomplete decomposition?

Which of the following statements is untrue?

• Decomposed marine organisms produce petroleum

• Decomposed marine organsims produce coal gas

• Decomposed marine organisms produce petroleum gas

• Decomposed land plants produce coal