Question 1

The three main greenhouse gases are:

Accepted Answer

carbon dioxide, methane, and water vapor

Answer

oxygen, carbon dioxide, and water vapor

Answer

nitrogen, carbon dioxide, and water vapor

Question 2

At the Step A, what is happening?

Accepted Answer

Radiation that is not absorbed by the Earth travels into the atmosphere and hits greenhouse gas molecules, causing them to vibrate.

Answer

Radiation that is not absorbed by the Earth travels into the atmosphere and goes back into space.

Answer

Radiation from the Sun enters Earth's atmosphere.

Question 3

At Step B, what is happening?

Accepted Answer

Radiation from the Sun enters Earth's atmosphere.

Answer

Radiation that is not absorbed by the Earth travels into the atmosphere and goes back into space.

Answer

Radiation that is not absorbed by the Earth travels into the atmosphere and hits greenhouse gas molecules, causing them to vibrate.

Question 4

At the Step C, what is happening?

Accepted Answer

Radiation that is not absorbed by the Earth travels into the atmosphere and goes back into space.

Answer

Radiation that is not absorbed by the Earth travels into the atmosphere and hits greenhouse gas molecules, causing them to replicate themselves..

Answer

Radiation is first absorbed, then reemitted from greenhouse gas molecules and sent back towards Earth's surface where it turns into oxygen.

Question 5

At Step D , what is happening?

Accepted Answer

Radiation is first absorbed, then reemitted from greenhouse gas molecules and sent back towards Earth's surface, warming the planet.

Answer

Radiation that is not absorbed by the Earth travels into the atmosphere and hits greenhouse gas molecules, causing them to replicate themselves..

Answer

Radiation that is not absorbed by the Earth travels into the atmosphere and goes back into space.

Question 6

Which of the following is NOT a source of additional greenhouse gases resulting from human activities?

Accepted Answer

afforestation

Answer

burning fossil fuels

Answer

cow farts

Answer

deforestation

Question 7

The data on this graph shows:

Accepted Answer

a trend of carbon dioxide levels increasing over time with variation in carbon dioxide levels during individual years.

Answer

variation of carbon dioxide levels decreasing over time with trends in carbon dioxide levels during individual years.

Answer

variation of carbon dioxide levels increasing over time with trends in carbon dioxide levels during individual years.

Answer

a trend of carbon dioxide levels decreasing over time with variation in carbon dioxide levels during individual years.

Question 8

What causes the atmospheric CO2 levels to increase and decrease within the same year?

Accepted Answer

photosynthesis occurs when plants are in bloom in warmer months and more carbon dioxide is absorbed, lowering levels in the atmosphere.

Answer

photosynthesis occurs when plants are in bloom in warmer months and less carbon dioxide is absorbed, raising levels in the atmosphere

Answer

the tilt of the Earth causes seasons to occur at opposite times in the Northern and Southern hemispheres, affecting carbon dioxide levels .

Answer

cellular respiration occurs when plants are in bloom in warmer months and more carbon dioxide is absorbed.

Question 9

What number best approximates the current global CO2 concentration?

Accepted Answer

420 ppm

Answer

340 ppm

Answer

400 ppm

Answer

380 ppm

Question 10

TODAY in the atmosphere above Holliston, MA, CO2 levels are likely to be:

Accepted Answer

towards the higher end of their yearly cycle because there is not much photosynthetic activity at this time of year.

Answer

towards the higher end of their yearly cycle because it is snowy out, preventing photosynthesis from happening.

Answer

towards the lowest end of their yearly cycle, but about to start rising again because there is about to be more photosynthetic activity once spring comes.

Answer

towards the lower end of their yearly cycle because there is not much photosynthetic activity at this time of year.

Question 11

In a combustion reaction:

Accepted Answer

fuel and oxygen react with each other to release thermal energy and form carbon dioxide and water vapor

Answer

fuel and methane react with each other to release thermal energy form carbon monoxide and water vapor

Answer

fuel and oxygen react with each other to release thermal energy form carbon dioxide and nitrogen.

Answer

fuel and oxygen react with each other to release light energy and form carbon dioxide and water vapor

Question 12

Carbon dioxide (CO2) is

Accepted Answer

a molecule made up of one carbon atom and two oxygen atoms

Answer

an atom made up of one carbon molecule and two oxygen molecules

Answer

an atom made up of two carbon molecules and one oxygen molecule

Answer

a molecule made up of two carbon atoms and one oxygen atom

Question 13

The bonds holding the CO2 together are formed when:

Accepted Answer

carbon and oxygen share electrons of their outermost shells

Answer

carbon and oxygen are attracted to each other because they have opposite charges

Answer

carbon and oxygen share electrons of their innermost shells

Answer

carbon and oxygen share protons of their outermost shells

Question 14

The formation of the CO2 bonds is complete when ____________________________.

Accepted Answer

each atom has eight electrons in its valence shell.

Answer

each molecule has two electrons in its valence shell.

Answer

each molecule has eight electrons in its valence shell.

Answer

each atom has two electrons in its valence shell.

Question 15

In this reaction, carbon dioxide and water are the:

Accepted Answer

reactants

Answer

ingredients

Answer

products

Question 16

In this reaction, carbonic acid (H2CO3) is the:

Accepted Answer

product

Answer

reactant

Answer

ingredient

Question 17

In this equation, as in all other chemical equations:

Accepted Answer

each atom present on the left side of the equation must be present on the right side of the equation.

Answer

each molecule present on the left side of the equation must be present on the right side of the equation.

Answer

the pH of the substances must be balanced

Answer

there must be two substances on the left side of the equation.

Question 18

In this equation one hydrogen detaches from the carbonic acid (H2CO3)

Accepted Answer

but leaves without an electron, making it a positive ion.

Answer

but leaves without a proton, making it a positive ion.

Answer

but leaves without an electron, making it a positive atom.

Question 19

As the H+ concentration increases in the water,

Accepted Answer

the acidity increases and the pH decreases.

Answer

the acidity increases and the pH increases.

Answer

the acidity decreases and the pH decreases.

Question 20

If a base is added to an acid, which of the following results can occur?

Accepted Answer

OH- ions will bond with H+ ions to form water which has a neutral pH.

Answer

OH- ions will bond with H+ ions to form water which has an alkaline pH.

Answer

the strength of both the base and the acid will increase.

Question 21

Which of the following marine organisms are most likely to be negatively impacted by ocean acidification?

Accepted Answer

oysters and corals

Answer

sharks and rays

Answer

sea stars and sea urchins

Question 22

The explanation for the answer to the previous question is:

Accepted Answer

The hydrogen (H+) ions produced during ocean acidification interfere with the ability of organisms to build their skeletons.

Answer

The hydrogen (H+) ions produced interfere with the ability of organisms to carry out photosynthesis.

Answer

The buffering process takes energy out of the ocean system that could have been used by the organisms for growth and development.

Question 23

Mitigation of ocean acidification involves:

Accepted Answer

using different methods to slow down and/or reverse the chemical reactions that take place when excess CO2 is absorbed by the ocean.

Answer

using seashells to carry out photosynthesis and absorb excess CO2 so it doesn't go in the ocean..

Answer

using natural chemical processes to slow down and/or reverse excess CO2 being emitted by ocean organisms when they breathe. .

Answer

using different methods to speed up and/or reverse the chemical reactions that take place when excess CO2 is absorbed by the ocean.

Question 24

Which of following is NOT an ocean acidification mitigation method?

Accepted Answer

adding carbonate from seashells to bond with OH- ions to lower acidity

Answer

growing kelp, seagrass, and other organisms that carry out photosynthesis to absorb carbon dioxide before it starts the chain of acidification reactions.

Answer

reducing greenhouse gas emissions so that less carbon dioxide gets absorbed by the ocean.

Answer

adding carbonate from seashells to bond with H+ ions to lower acidity

Question 25

As global temperatures rise, the rate of ocean acidification is likely to:

Accepted Answer

increase because molecules will move faster and reactions will speed up.

Answer

increase because molecules will move upward in the water column and reactions will speed up.

Answer

decrease because molecules will move less quickly and reactions will slow down.

Answer

increase because molecules will move more unpredictably and reactions will speed up.

Question 26

The x axis shows:

Accepted Answer

atmospheric carbon dioxide levels in ppm

Answer

the pH of the surface ocean

Answer

the time that has passed since carbon dioxide levels started rising

Answer

the dangers of climate change

Question 27

The y axis shows:

Accepted Answer

the pH of the surface ocean

Answer

the dangers of climate change

Answer

the time that has passed since carbon dioxide levels started rising

Answer

atmospheric carbon dioxide levels in ppm

Question 28

The dot along the graphed line marks the pH and CO2 of the Earth in 2024.  What is the approximate pH of the ocean currently.  Choose the closet number.

Accepted Answer

8.05

Answer

8.15

Answer

490

Answer

420

Question 29

The dot along the graphed line marks the pH and CO2 of the Earth in 2024.  What is the approximate CO2 level of currently?  Choose the closet number.

Accepted Answer

420

Answer

8.15

Answer

490

Answer

8.05

Question 30

The relationship between the two graphed variables is:

Accepted Answer

as CO2 levels increase, pH decreases

Answer

as CO2 levels decrease, pH remains stable

Answer

as CO2 levels decrease, pH decreases

Answer

as CO2 levels increase, pH increases

Related quizzes

Related quizzes