4th Grade Science : 4th Grade Science

Study concepts, example questions & explanations for 4th Grade Science

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Example Questions

Example Question #102 : Earth And Space Science

True or False: Fossil fuels primarily have positive impacts on the environment.

Possible Answers:

True

False

Correct answer:

False

Explanation:

The statement in the question is false. Fossil fuels are beneficial to humans and fulfill the needs we have for power, electricity, and industrialization, but it comes at a cost to the environment. Mining and stripping the soil, deforestation, water and air pollution, and loss of animal habitats are just a few of the adverse effects that fossil fuels have on the environment.

Example Question #6 : Formation And Uses Of Energy

Based on the graph below, which fossil fuel is currently on a decline in usage?

Screen shot 2020 09 02 at 9.42.52 am

Possible Answers:

Coal

Biomass

Natural Gas

Petroleum

Correct answer:

Coal

Explanation:

Based on the graph provided by the US Energy Information Administration, coal is currently on a decline in usage. Following the black line (representing coal), it can be seen that there is a decrease in use. The other energy type is on increasing in usage.

Example Question #161 : 4th Grade Science

A material that is found in nature and helpful to humans is called a ________________.

Possible Answers:

natural resource

mineral

nutrient resource

energy resource

Correct answer:

natural resource

Explanation:

Humans receive many of our resources from nature, and they are called natural resources. These are things like water, trees, and wind that are naturally occurring, and humans can harness their energy to create power for the everyday things we need. Humans will also mine for resources that are naturally occurring so that we can transform them into other necessary products.

Example Question #162 : 4th Grade Science

What does the term "fuel" mean?

Possible Answers:

Fuel is the burning of a substance.

Fuel is a renewable resource that is beneficial to the environment.

Fuel is a substance that provides energy as a result of a chemical change.

Fuel forms from the remains of ocean organisms.

Correct answer:

Fuel is a substance that provides energy as a result of a chemical change.

Explanation:

Fuel is often thought of in terms of gasoline for a car, but it is any substance that provides energy from a chemical change. Food that we eat is turned into energy through our digestive system, so it is also a fuel. Fuel can be for machinery, the body, cars, and other mechanical items. Many of the fuels that we use are nonrenewable and can be harmful to the environment.

Example Question #163 : 4th Grade Science

Fossil fuels are nonrenewable resources. They are nonrenewable because they take millions of years to form. Earth’s oil took 500 million years to form. Fossil fuels are formed from the remains of organisms. Fossil fuels are rich in energy. Coal is formed from plant remains that have been buried for millions of years. Coal is the fuel used in many electrical power plants. Oil is a thick, black, liquid fossil fuel. Oil forms from the remains of ocean organisms. Petroleum is another name for oil. Natural gas is a mixture of gases. Natural gas forms from the remains of ocean organisms. 

How are fossil fuels created?

Possible Answers:

Cut down from trees and processed

Remains of organisms put under pressure

Grown in a laboratory for many years

Harvested from crops and greenhouses

Correct answer:

Remains of organisms put under pressure

Explanation:

Fossil fuels are all created underground or underwater from the remains of organisms. The short passage explains that they are all nonrenewable and take millions of years to form. Coal is from plants, and oil and natural gas are from ocean organisms. All fossil fuels were once a living thing that were placed under immense amounts of pressure over a long period to create the fuel that we need to run our energy and lives.

Example Question #163 : 4th Grade Science

Which answer choice lists only renewable energy sources?

Possible Answers:

Solar power, wind, water, and oil

Natural gas, oil, petroleum, and solar power

Fossil fuels, wood, water, and wind

Water, wind, solar, and thermal power

Correct answer:

Water, wind, solar, and thermal power

Explanation:

Renewable resources are created by nature and can be reused or regenerated quickly. They cause very little damage to the Earth and can be a cleaner way to generate the energy we need to live. Wind, water, solar, and thermal power are all products of the Earth and are renewable.

Example Question #164 : 4th Grade Science

Which answer choice lists only nonrenewable energy sources?

 

Possible Answers:

Natural gas, oil, petroleum, and coal

Oil, wind, coal, and natural gas

Water, oil, petroleum, and coal

Wind, thermal, solar, and water

Correct answer:

Natural gas, oil, petroleum, and coal

Explanation:

Nonrenewable energy sources are created when the Earth applies immense amounts of pressure to the remains of organisms buried deep below the surface. The materials must be dug or mined out of the ground and collected to be processed and used. Natural gas, oil, petroleum, and coal are all nonrenewable energy sources that are difficult to replace and will eventually run out.

Example Question #166 : 4th Grade Science

Fossil fuels are nonrenewable resources. They are nonrenewable because they take millions of years to form. Earth’s oil took 500 million years to develop. Fossil fuels are formed from the remains of organisms. Fossil fuels are rich in energy. Coal is formed from plant remains that have been buried for millions of years. Coal is the fuel used in many electrical power plants. Oil is a thick, black, liquid fossil fuel. Oil forms from the remains of ocean organisms. Petroleum is another name for oil. Natural gas is a mixture of gases. Natural gas forms from the remains of ocean organisms.

Fossil fuels are used for __________.

Possible Answers:

coal

energy

oil

plants

Correct answer:

energy

Explanation:

Fossil fuels are all created underground or underwater from the remains of organisms. The short passage explains that they are all nonrenewable and take millions of years to form. Coal is from plants, and oil and natural gas are from ocean organisms. All fossil fuels were once a living thing that were placed under immense amounts of pressure over a long period to create the fuel that we need to run our energy and lives. Fossil fuels are used for energy.

Example Question #168 : 4th Grade Science

Iron ore is a resource that is found in many places around the world. Why is iron ore a nonrenewable resource?

Possible Answers:

Iron ore is difficult to recycle.

Forming new iron ore is an extremely long process.

Mining iron ore causes pollution and damage to the environment.

Most iron ore has yet to be discovered.

Correct answer:

Forming new iron ore is an extremely long process.

Explanation:

Iron ore is a nonrenewable resource because it is challenging to replenish due to the amount of time it takes to form. Most of the iron ore that is currently deep within Earth's rocks is 1.8 billion years old. By the time we have used all of the available iron ore, there will not be enough time to generate new materials.

Example Question #169 : 4th Grade Science

How could nonrenewable resources be replaced with renewable resources?

Possible Answers:

Heat homes with wind-generated power.

Generate power for a town with hydroelectric methods.

Use hybrid vehicles that cut down on gas usage.

All of the answer choices are correct.

Create electricity with solar panels instead of coal.

Correct answer:

All of the answer choices are correct.

Explanation:

Nonrenewable resources are those found on Earth or within Earth's surface and take millions if not billions of years to form and replenish themselves, such as oil, petroleum, and coal. Renewable resources are generated by sources that cannot run out and do not need replenishing like the Sun, water, or wind. All of the answer choices provide good options for replacing nonrenewable resources with something renewable.

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