How does the concentration of carbon dioxide in the atmosphere affect climate?

As carbon dioxide concentrations increase, temperatures increase

As carbon dioxide concentration increase, temperatures decrease.

Carbon dioxide concentrations have no affect on climate

As carbon dioxide concentrations increase, temperatures become more random.

What happens when sunlight hits greenhouse gas molecules?

slowly heats them, increasing temperature

quickly cools them, decreasing temperature

slowly cools them, decreasing tempature

quickly heats them, increasing temprature

Which human activity is correctly paired with its likely future consequence?

use of fossil fuels — depletion of underground coal, oil, and natural gas supplies

overfishing in the Atlantic — increase in supply of flounder and salmon as food for people

development of electric cars or hybrid vehicles — increased rate of global warming

genetically engineering animals — less food available to feed the world’s population

Which human activity would most likely deplete nonrenewable resources?

use of natural enemies to eliminate insect pests

development of wildlife refuges

governmental restriction of industrial pollution

Deforestation by burning has been described as a "double whammy" to the environment, meaning it has 2 negative impacts. Why is this description accurate?

Forest burning releases CO 2 while decreasing oxygen, which disrupts cycles

Deforestation reduces the amount of oxygen in the atmosphere, which depletes the ozone layer

Forest clearing is often followed by land development, which often leads to increased noise pollution

Deforestation increases the number of plant and animal species by destroying habitat

Approximately 75 percent of the Earth's surface is covered in water. So why is water considered such a precious resource?

Only a small fraction of the Earth's water is freshwater available for drinking and irrigation

The greenhouse effect is causing most of the world's freshwater to be trapped in the atmosphere

Each year, more freshwater is being trapped in icecaps located at the North and South Poles

Global warming caused by greenhouse gas emissions will likely cause Earth's oceans to evaporate

Albert wants to practice conservation. He has decided to examine his lifestyle in order to identify areas in which he can reduce the resources he consumes, reuse resources he already has, and recycle resources that he cannot reuse. In which of the following ways can Albert best reduce the resources he currently consumes?

Ride a bike to work instead of taking his car

Use paper grocery bags as gift wrap

Subscribe to a daily rather than a weekly newspaper

Use an organic rather than synthetic fertilizer in his garden

Many common products, such as wooden furniture, paper, and books, are made from trees. Which of the following is a likely consequence of humans cutting down a forest in order to make use of the natural resources there?

the decrease of chemical runoff into the oceans

the increase of light pollution in cities

Humans often change ecosystems as a result of population growth, consumption, and technology. Which of the following exemplifies a way in which humans modify ecosystems?

factory and automotive emissions causing acid rain

redirecting and storing freshwater behind dams

cutting down trees to build new buildings and roads

When fertilizers run off farmland into streams and ponds, the nitrogen content of the water increases. This can lead to rapid growth of algae in a process called eutrophication. How can this process affect other organisms in the water?

Oxygen is used up as algae is decomposed, reducing the amount available to other organisms.

The water becomes better able to support aerobic organisms.

The algae provide food for fishes and other organisms, leading to decreased algae populations.

The extra nitrogen provides additional food for the other organisms, increasing their population.

What are some consequences of deforestation?

soil erosion, loss of biodiversity, loss of ability to remove CO2

building of more infrastructure

more mercury and cyanide released into rivers

Human Impact NSD 131 8th Grade

Authored by Tyler Williamson

Other Sciences

6th - 8th Grade

Used 38+ times

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25 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

New fuels are being produced by converting corn and grasses into compounds containing alcohols that can be broken down for energy in various engines. The purpose of this research is to

reduce the use of nonrenewable resources.

increase the rate of air pollution.

reduce the rate of homeostasis in organisms.

cause a loss of biodiversity in the rain forests.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A natural resource that can be replaced at the same rate at which the resource is consumed.

nonrenewable resource

renewable resource

oil

gas

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A nonrenewable energy resource formed from the remains of organisms that lived long ago; examples include oil, coal, and natural gas.

oil

coal

fossil fuels

natural gas

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The natural resources used by society are limited by various factors. Why is coal considered a nonrenewable resource?

Once coal is used up, it can never be replaced.

Coal is a nonrenewable resource, because it comes from the impact of meteors with the Earth

Coal was a renewable resource, until it was mismanaged by humans

Coal is considered a nonrenewable resource, because it takes millions of years to form

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

How can people reduce the amount of resources they use?

make more landfills and garbage dumps

buy products with lots of packaging

use water, electricity, and gas conservatively and recycle metal, paper, and glass

Think only about what you need right now and don’t worry about the future

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are some bad things attributed to population growth?

autism & genetic diseases

religious conflict

low wages & unemployment

burning fossil fuels & increased CO2 production

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Increased carbon dioxide may cause global warming by trapping more ____________ in the atmosphere.

water

gases

heat

water vapor

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Human Impact NSD 131 8th Grade

New fuels are being produced by converting corn and grasses into compounds containing alcohols that can be broken down for energy in various engines. The purpose of this research is to

A natural resource that can be replaced at the same rate at which the resource is consumed.

A nonrenewable energy resource formed from the remains of organisms that lived long ago; examples include oil, coal, and natural gas.

The natural resources used by society are limited by various factors. Why is coal considered a nonrenewable resource?

How can people reduce the amount of resources they use?

What are some bad things attributed to population growth?

Increased carbon dioxide may cause global warming by trapping more ____________ in the atmosphere.

How does the concentration of carbon dioxide in the atmosphere affect climate?

What is one way that carbon enters the atmosphere?

How does atmospheric carbon dioxide affect global temperature?

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