atmosphere test

Question 1

what is air a mixture of

Answer 1

gases

Question 2

how much nitrogen is in the air, N(lowercase2)

Answer 2

78%

Question 3

how much oxygen is in the air 02

Answer 3

21%

Question 4

how much argon is in the air. Ar

Answer 4

0.9%

Question 5

how much of the other gases are in the air e.g. He

Answer 5

0.004%

Question 6

the composition of the atmosphere was not changed for how many years?

Answer 6

200 million years

Question 7

whats the test for hydrogen and equation/reason

Answer 7

lit splint, burns with a squeaky pop, 2H

Question 8

whats the test for oxygen and equation/reason

Answer 8

glowing splint relights. glowing splint needs oxygen to combust

Question 9

whats the test for carbon dioxide and equation/reason

Answer 9

limewater turns cloudy (Ca(OH2) calcium hydroxide reacts with carbon dioxide to form calcium carbonate as a precipitate(solid)

Question 10

whats the test for NH3

Answer 10

damp red litmus paper turns blue

Question 11

whats the test for Cl2

Answer 11

damp blue litmus paper turns colourless/bleaches white

Question 12

what was the intensive volcanic activity

Answer 12

carbon dioxideCo2, water vapour H20(g), methane CH4, Ammonia NH3, nitrogen N2

Question 13

whats acid rain+ whats it produced from

Answer 13

Acid rain: Rain that is acidic due to dissolved gases, such as sulfur dioxide, produced from
the burning of fossil fuels.

Question 14

whats carbon footprint

Answer 14

Carbon footprint: The total amount of carbon dioxide and other greenhouse gases emitted
over the full life cycle of a product.

Question 15

whats environmental implication

Answer 15

Environmental implication: The effect that the activity has on the environment.

Question 16

whats fossil fuels

Answer 16

Fossil fuels: Natural fuels such as coal and gas, formed in the past from the remains of
living organisms.

Question 17

whats global climate change

Answer 17

Global climate change: A long-term shift in global climate patterns.

Question 18

whats global dimming

Answer 18

Global dimming: A gradual reduction in the amount of light reaching the Earth’s surf

Question 19

evolution of atmosphere

Answer 19

volcanic activity slowed down causing the earth to cool . it cooled below 100degreecelcius meaning water vapour condensed
CO2 dissolved in oceans - dissolution
CO2 also decreases due to being “locked up” in carbonate rocks
evolution of algae and green plants caused photosynthesis
simple oceanic life developed due to increase in O2
the ozone layer forms
the ozone layer allows land plants and animals to develop - respiration occured

Question 20

benefits of global warming

Answer 20

temp is high enough for water to be liquid on the surface so enables life to develop

Question 21

effects of gloabl warming/climate change

Answer 21

sea levels rising - hence floods and costal erosion
unpredictab;e/extreme weather patterns e.g. storms,distrubution of wildlife species
temp + water stress
decreased/higher cost food production