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Environmental Systems

Total questions: 40

Worksheet time: 37mins

Name
Class
Date
1.

All material in the universe that has mass and occupies space is called...

a)

element

b)

compound

c)

space

d)

matter

2.

The central core of every atom is called a(n)...

a)

proton

b)

nucleus

c)

neutron

d)

atom

3.

3:Which type of macromolecule can act as hormones and serve as enzymes?

a)

protein

b)

carbohydrate

c)

nucleic acid

d)

fat

4.

Water molecules are composed of...

a)

1 hydrogen and 2 oxygen

b)

2 carbon 1 oxygen

c)

1 carbon, 1 hydrogen, 1 oxygen

d)

1 oxygen 2 hydrogen

5.

The characteristic that is responsible for water's unique properties

a)

surface tension

b)

polarity

c)

capillary action

d)

ability to dissolve many substances

6.

Which of Earth's spheres consists of the layers of gases surrounding our planet?

a)

geosphere

b)

atmosphere

c)

biosphere

d)

hydrosphere

7.

What is the name of the thin layer of rock that forms Earth's outer skin?

a)

crust

b)

mantle

c)

core

d)

asthenosphere

8.

Which sphere of Earth is made of all the rock above and below Earth's surface?

a)

lithosphere

b)

hydrosphere

c)

geosphere

d)

atmosphere

9.

97% of Earth's water is

a)

freshwater

b)

frozen water

c)

groundwater

d)

salt water

10.

This sphere is the collection of air and gases around the earth.

a)

atmosphere

b)

biosphere

c)

hydrosphere

d)

lithosphere

11.

This sphere consists of all living things on Earth.

a)

atmosphere

b)

biosphere

c)

lithosphere

d)

geosphere

12.

This sphere is any part of the Earth covered by water.

a)

atmosphere

b)

biosphere

c)

hydrosphere

d)

lithosphere

13.

This sphere is the Earthś solid surface.

a)

lithosphere

b)

biosphere

c)

hydrosphere

d)

atmosphere

14.

This sphere includes the continents, the ocean floor, all the rocks on the surface, and all of the sand in the deserts.

a)

Hydrosphere

b)

Atmosphere

c)

Biosphere

d)

Geosphere

15.
The following is an example of what type of feedback loop?
a)
Negative Feedback Loop
b)
Neutral Feedback Loop
c)
Positive Feedback Loop
d)
Cowboy Feedback Loop
16.
The following is an example of what type of feedback loop?
a)
Negative Feedback Loop
b)
Neutral Feedback Loop
c)
Positive Feedback Loop
d)
Animal Feedback Loop
17.

A ________________ feedback loop makes a system more stable.

a)

Positive

b)

Neutral

c)

Negative

d)

Circular

18.

A _________________ feedback loop moves a system to an extreme.

a)

Positive

b)

Neutral

c)

Circular

d)

Negative

19.

A wolf population is introduced into an ecosystem, causing the deer population to decrease. The wolf population decreases as the deer population decreases, allowing the deer to begin to increase again. This is an example of what type of feedback?

a)

Neutral

b)

Ecosystem

c)

Positive

d)

Negative

20.

Any adjustment to input or output rates caused by changes to a system are

a)

feedback

b)

steady state

c)

closed system

d)

open system

21.
What is the definition of ecological footprint?
a)
is the footprint of ecologist
b)
is a measure of the impact living things have on the environment.
c)
is a kind of plant that grows in the rainforrest.
d)
a measure of the impact humans have on the environment.
22.

What kinds of resources make up your ecological footprint?

a)

waste production

b)

water and energy use

c)

food and shelter

d)

clothing and transportation

e)

All of the above

23.

Which of these is a good method for reducing your ecological footprint?

a)

Save energy, food, water, shelter, and produce less waste such green house gases and sewage.

b)

Drive less, fly less, turn off lights

c)

Compost and live in a smaller house

d)

All of the above

24.

Which of these countries have the highest Eco-Footprint per capita?

a)

Kenya

b)

United States

c)

Brazil

d)

Russia

25.

Scientists divide Earth into spheres, which are often described by their _______________________ rather than by their location.

a)

size

b)

location

c)

makeup

d)

temperature

26.

A ______________________ is a process in which the outputs of a system are circled back and used as inputs.

a)

ecological model

b)

feedback loop.

c)

environmental system

d)

eco footprint

27.
What does NOT produce carbon dioxide?
a)
Photosynthesis
b)
Burning Fossil Fuels
c)
Animal respiration
d)
Plants decaying
28.
TRUE or FALSE?
All of the carbon in existence is continually recycled in the carbon cycle.
a)
True
b)
False
29.
Carbon can be found in...
a)
The atmosphere
b)
Soil
c)
Fossil fuels
d)
All of the above
30.
Which of the following removes carbon from the atmosphere?
a)
Combustion
b)
Respiration
c)
Photosynthesis
d)
Death
31.

What converts nitrogen gas into a usable form for plants and animals?

a)

bacteria

b)

rain

c)

fungi

d)

car exhaust

32.

The process in which nitrogen circulates and is recycled is called

a)

The nitrogen cycle

b)

The carbon cycle

c)

The water cycle

d)

The phosphorus cycle

33.

Organisms that need nitrogen to survive.

a)

only plants

b)

only animals

c)

only bacteria

d)

all living things

34.

How do animals get the nitrogen they need?

a)

From the air they breathe

b)

From the water they drink

c)

From the food they eat

d)

From the sun

35.
The process of plants losing water through their leaves is called ____.
a)
condensation
b)
evaporation
c)
transpiration
d)
exhaling
36.
Which is NOT a process of the water cycle?
a)
precipitation
b)
freezing
c)
transpiration
d)
evaporation
37.
What is the most abundant gas in the atmosphere?
a)
hydrogen
b)
oxygen
c)
helium
d)
nitrogen
38.
Where are denitrifying bacteria found?
a)
In the soil
b)
Root nodules
c)
In dead things
d)
In the atmosphere
39.
Which is NOT a way that nitrogen compounds are added to the soil?
a)
Decay of dead organisms
b)
Denitrification
c)
Animal waste
d)
Nitrogen-fixation
40.
Where is carbon stored in the environment?
a)
Fossil fuels
b)
Wood of trees
c)
Calcium carbonate (shells and bones)
d)
All of the above

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