Question 1

The wavelength of light in the visible range is
A)about the size of an atom of carbon.
B)intermediate between the size of an animal cell and a virus.
C)about the diameter of a CD.
D)intermediate between the size of an animal cell and the diameter of a CD.

Accepted Answer

See fig 2.7 for information on the relationship between wavelengths and everyday items.

Question 2

As the ozone hole gets more pronounced,with time,one expects the incidence of skin cancer to
A)decrease worldwide.
B)increase worldwide.
C)increase in the northern hemisphere and decrease in the southern hemisphere.
D)decrease in the northern hemisphere and decrease in the northern hemisphere.

Accepted Answer

Remember that ozone blocks UV radiation which causes skin damage.

Question 3

What is the relationship between stratospheric levels of atomic chlorine and ozone?
A)As chlorine increases,ozone increases.
B)As chlorine increases,ozone decreases.
C)As chlorine changes,the effect on the ozone level is unpredictable.
D)As chlorine changes,there is no effect of the ozone level.

Accepted Answer

Remember that chlorine works to destroy ozone.

Question 4

The Montreal protocol is a
A)treaty to protect against global warming.
B)treaty to reduce the amount of CFCs produced in the world.
C)list of substitutes for CFCs.
D)way to destroy CFCs in the stratosphere.

Accepted Answer

Remember that this treaty is about repairing the ozone hole.

Question 5

During the Antarctic spring,ozone is destroyed at a greater rate than it is formed
A)on the surface of atmospheric ice crystals.
B)in a process that is catalytic.
C)in polar stratospheric clouds.
D)All of these choices are correct.

Accepted Answer

Think about the whole process.Is there more than one step?

Question 6

HFCs may be used to replace CFCs.Which compound is a HFC? A)CH₂Cl CCl₂F B)CH₂FCl C)CF₃CH₂F D)CHClF₂

Accepted Answer

HFCs contain hydrogen in addition to Cl and F

Question 7

Which contributes to the ozone hole?
A)automobile exhaust
B)chlorofluorocarbons (CFCs)
C)loss of Northern forests
D)All of these choices are correct.

Accepted Answer

Only CFCs contain chlorine,which acts as a catalyst for ozone destruction.The others are environmental concerns,but don't contribute to the ozone hole.

Question 8

Which color in the rainbow has the shortest wavelength?
A)orange
B)red
C)yellow
D)blue

Accepted Answer

Remember ROY G.BIV to help with the colors from red (longest wavelength)to violet (shortest wavelength)

Question 9

The structure of ozone most closely resembles a
A)linear molecule with different lengths of chemical bonds,for example, 
B)linear molecule with the same length of chemical bonds,for example, 
C)bent molecule with different lengths of chemical bonds,for example, 
D)bent molecule with the same length of chemical bonds,for example,

Accepted Answer

The answer of The structure of ozone most closely resembles...

Question 10

The speed of light in air
A)depends only on the frequency of the light.
B)depends only on the wavelength of light.
C)is independent of the wavelength and frequency of light.
D)depends on both the wavelength and the frequency of light.

Accepted Answer

Remember that light can travel in vacuum and is a constant.

Question 11

Which statement is correct?
A)UV-A is the most energetic of the three forms of UV light.
B)UV-B is the most energetic of the three forms of UV light.
C)UV-C is the most energetic of the three forms of UV light.
D)UV-A,UV-B,and UV-C are equally energetic.

Accepted Answer

See Table 2.4.Remember that UV-A has the longest wavelength while UV-C has the shortest wavelength

Question 12

The ozone hole is most prominent on the Earth over
A)North America.
B)Europe.
C)Africa.
D)Antarctica.

Accepted Answer

Ozone is only destroyed over the Antarctic and the hole does not move far from its origin.

Question 13

DNA,the genetic material of living organisms,is damaged by light in the
A)visible region of the spectrum.
B)ultraviolet region,especially below a wavelength of 320 nm.
C)ultraviolet region,especially above a wavelength of 340 nm.
D)infrared region of the spectrum.

Accepted Answer

Damage by EM radiation usually occurs to structure that are of the same size as the wavelength of the radiation.

Question 14

Which is correct?
A)Ozone forms by combining an oxygen atom with an oxygen molecule.
B)There is a dynamic steady state of ozone in the stratosphere.
C)UV radiation will dissociate ozone into an oxygen atom and an oxygen molecule.
D)All of these choices are correct.

Accepted Answer

See fig 2.10 for a visual description of ozone's chemical cycling.

Question 15

Ozone in our atmosphere is important because it A)absorbs some UV radiation. B)helps trees grow. C)reacts with excess CO₂. D)reflects IR radiation.

Accepted Answer

Remember that the ozone layer protects from sunburn,which is caused by exposure to UV radiation

Question 16

How many protons,neutrons,and electrons are there in a neutral atom of ?

A)A
B)B
C)C
D)D

Accepted Answer

Remember that the mass is protons plus neutrons while protons must equal electrons for a neutral atom.

Question 17

Wavelength is the
A)number of waves passing a fixed point in one second.
B)height of the wave.
C)distance between successive peaks in a wave.
D)distance between a peak of one wave and the next trough.

Accepted Answer

See fig.2.5

Question 18

In the periodic table,which elements typically have similar properties?
A)those in the same rows
B)those related diagonally
C)those in the same columns
D)those on opposite sides

Accepted Answer

Groups are those with similar properties.

Question 19

The goal of the Montreal Protocol in 1987 was to
A)reduce the amount of new production of chlorofluorocarbons in developed countries.
B)recycle existing chlorofluorocarbons rather than release them into the air.
C)encourage research into substitutes for chlorofluorocarbons.
D)All of these choices are correct.

Accepted Answer

The Montreal Protocol had more than one goal.

Question 20

The correct Lewis structure for HCl is:
A) 
B) 
C) 
D)

Accepted Answer

All atoms must have an octet but hydrogen may only have two electrons.

Quiz 2: Protecting the Ozone Layer

The wavelength of light in the visible range is

As the ozone hole gets more pronounced,with time,one expects the incidence of skin cancer to

What is the relationship between stratospheric levels of atomic chlorine and ozone?

The Montreal protocol is a

During the Antarctic spring,ozone is destroyed at a greater rate than it is formed

HFCs may be used to replace CFCs.Which compound is a HFC?

Which contributes to the ozone hole?

Which color in the rainbow has the shortest wavelength?

The structure of ozone most closely resembles a

The speed of light in air

Which statement is correct?

The ozone hole is most prominent on the Earth over

DNA,the genetic material of living organisms,is damaged by light in the

Which is correct?

Ozone in our atmosphere is important because it

How many protons,neutrons,and electrons are there in a neutral atom of ?

Wavelength is the

In the periodic table,which elements typically have similar properties?

The goal of the Montreal Protocol in 1987 was to

The correct Lewis structure for HCl is: