Fossile fuels

What is a mixture?

• A single type of atom.

• Different substances not chemically joined together.

• 2 or more atoms chemically joined together.

• A natural resource.

Answer explanation

A mixture consists of different substances that are not chemically combined. This means each substance retains its own properties, unlike compounds where atoms are chemically bonded.

What is a natural resource?

• A type of element.

• A raw material found in nature that may be processed into useful substances.

• A compound of different atoms.

• A mixture of substances.

Answer explanation

A natural resource is defined as a raw material found in nature that can be processed into useful substances, making this choice the correct answer. The other options do not accurately describe natural resources.

Which of the following is an example of a natural resource?

• Plastic

• Wood

• Steel

• Glass

Answer explanation

Wood is a natural resource derived from trees, used for various purposes. In contrast, plastic, steel, and glass are synthetic or processed materials, not classified as natural resources.

Which of the following is NOT a natural resource?

• Wheat

• Fossil fuel

• Plastic

• Wood

Answer explanation

Plastic is a synthetic material made from petrochemicals, not a natural resource. In contrast, wheat, fossil fuels, and wood are all derived from natural processes.

What is an example of a compound?

• Gold

• Water

• Air

• Wood

Answer explanation

Water is a compound made of two hydrogen atoms and one oxygen atom (H2O). In contrast, gold is an element, air is a mixture, and wood is an organic material, not a pure compound.

What is the definition of a natural resource?

• A type of element.

• A raw material found in nature that may be processed into useful substances.

• A compound of different atoms.

• A mixture of substances.

Answer explanation

A natural resource is defined as a raw material found in nature that can be processed into useful substances, making this choice the correct answer. The other options do not accurately describe natural resources.

What builds up on top of the mud?

• Layers of water

• Layers of sand

• Layers of oil

• Layers of plants

Answer explanation

Layers of sand build up on top of mud due to sedimentation processes, where sand particles settle and accumulate over time, creating distinct layers above the mud.

Where is oil typically found?

• In the atmosphere

• In rivers

• In geological formations called reservoirs

• In forests

Answer explanation

Oil is typically found in geological formations called reservoirs, where it accumulates over time. This is the correct choice, as oil is not found in the atmosphere, rivers, or forests.

What process is used to extract oil from reservoirs?

• Mining

• Drilling a well

• Evaporation

• Filtration

Answer explanation

The correct process to extract oil from reservoirs is by drilling a well. This method allows access to underground oil deposits, unlike mining, evaporation, or filtration, which are not suitable for oil extraction.

What is a common use of synthetic products made from oil?

• Building bridges

• Making plastics

• Growing plants

• Cleaning oceans

Answer explanation

Synthetic products made from oil are commonly used in making plastics, which are essential materials in various industries. Other options like building bridges or cleaning oceans do not primarily involve synthetic oil products.