8th Grade MEGA Review Flashcard for Units 1-4

Front

What type of reaction occurs in a hand warmer?

Back

Exothermic reactions release heat, making the surroundings warmer. Hand warmers use exothermic reactions to provide warmth.

Front

What are fossil fuels?

Back

Fossil fuels are natural fuels such as coal, oil, and natural gas, formed from the ancient remains of plants and animals.

Front

What is a renewable resource?

Back

A renewable resource is a natural resource that can be replenished at the same rate it is consumed, such as solar energy or wind.

Front

What is a nonrenewable resource?

Back

A nonrenewable resource is a natural resource that cannot be replaced in a useful time frame, such as fossil fuels.

Front

What does it mean to recycle?

Back

Recycling is the process of converting waste materials into new products, reducing the consumption of fresh raw materials.

Front

What is an example of an exothermic reaction?

Back

An example of an exothermic reaction is the combustion of fuels, such as burning wood or gasoline.

Front

What is the difference between renewable and nonrenewable resources?

Back

Renewable resources can be replenished naturally over time, while nonrenewable resources are finite and deplete over time.

Front

What is the importance of recycling?

Back

Recycling helps conserve natural resources, reduces waste in landfills, and decreases pollution.

Front

What are some examples of renewable resources?

Back

Examples of renewable resources include solar energy, wind energy, hydroelectric power, and biomass.

Front

What are some examples of nonrenewable resources?

Back

Examples of nonrenewable resources include coal, oil, natural gas, and uranium.