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MP6 Quiz 2 (ozone layer)

Total questions: 20

Worksheet time: 1hrs 2mins

Name
Class
Date
1.

Which of these sets of three items produce CFCs

a)

cars, factories, and cardboard

b)

spray cans, cardboard, insulation

c)

spray cans, refrigerators, cardboard

d)

spray cans, refrigerators, air conditioner

2.
What absorbs ultraviolet rays in the atmosphere?
a)
troposphere
b)
stratosphere
c)
ozone layer
d)
greenhouse gases
3.

How many oxygen atoms does a molecule of ozone contain?

a)

1

b)

2

c)

3

d)

4

4.

Where is the "GOOD" ozone located?

a)

troposphere (0-7 miles)

b)

stratosphere (9-31 miles)

c)

mesosphere (32-80 miles)

d)

thermosphere (80-500 miles)

5.

What chemical is responsible for breaking up the ozone?

a)

CFCs

b)

Carbon Dioxide

c)

Nitrogen

d)

Oxygen

6.
This protects us from harmful UV rays from the sun
a)
Troposphere
b)
Stratosphere
c)
Greenhouse Effect
d)
Ozone Layer
7.
The Montreal Protocol banned the use of CFCs. What so they hope this will do for the ozone layer?
a)
Deplete it completely
b)
Make the ozone hole smaller
c)
Make the ozone hole larger
d)
Thin the layer to allow more gas to escape
8.
The ozone layer protects us from
a)
UV rays
b)
CFCs
c)
Increased atmospheric heat
d)
Decreased atmospheric heat
9.

How can we protect ourselves from UV rays?

a)

Wearing hats when we go outside

b)

Using sunscreen on a daily basis

c)

UV rays cannot harm you they are good for your health

d)

Long exposure to the sun protects you from UV rays

10.

Which of these is a consequence of global warming to our oceans? (choose all that apply)

a)

Acidification: Ocean is becoming more acidic.

b)

Sea level is rising due to land ice melting.

c)

Coral bleaching which results in them dying.

d)

Animals are getting strangled by plastic 6 pack rings.

11.

Corals are...

a)

plants

b)

algae

c)

animals

d)

bacteria

12.

The coral and the algae have what type of relationship?

a)

parasitic

b)

mutualistic

c)

commensalistic

d)

no relationship at all

13.

The pH of the oceans is becoming more

a)

acidic or has a pH of 8 or higher

b)

neutral with a pH of 7

c)

Basic or has a pH of 8 or higher

d)

Acidic or has a pH of less than 7

14.

Why is the ocean becoming more acidic?

a)

The water is absorbing more CO2 from the use of fossil fuels causing the pH to change from neutral to acid

b)

The water is getting colder because the poles are melting causing the pH to change from basic to neutral

c)

The water is absorbing more CO2 from the use of fossil fuels causing the pH to change from basic to acidic

d)

The water is getting colder because the poles are melting causing the pH to change from neutral to acid

15.

Corals are important because

a)

They are important to the ocean's biodiversity

b)

They serve as habitat for many aquatic species

c)

They protect shores from storm surges

d)

All of the above

16.

A change in pH in the ocean water...

a)

Causes algae to leave the coral, leaving the coral without the energy it gets from the algae, and eventually dying

b)

Causes the coral to leave the algae

c)

Causes fish that live in the coral reef to move to colder water

17.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-5
d)
1-20
18.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
19.
What is the only substance with a neutral pH of 7?
a)
Milk
b)
Orange Juice
c)
Water
d)
Blood
20.
A solution with a pH of 10 is mixed with a solution with a pH of 4.  What would the pH of the mixture most likely be?
a)
10
b)
4
c)
40
d)
7