Unit 5 Science

According to the graphs above, what was the concentration of carbon dioxide in the atmosphere before the 1700's?

• 21%

• .037%

• .038%

• .9%

How much have carbon dioxide levels changed over the past 14 years?

• They have remained constant.

• They have increased steadily

• They have decreased steadily

• They have increased and decreased showing no tread

Tags

NGSS.MS-ESS3-5

According to the bar chart, which of the following gases are the major contributors to the greenhouse effect?

• HFCs, PFCs, and SF6

• nitrous oxide and HFCs

• methane and nitrous oxide

• carbon dioxide and methane

Tags

NGSS.MS-ESS3-4

NGSS.MS-ESS3-5

Why are scientists concerned about the effects of the trend shown in the graph above?

• The rising sea level will devastate coastal habitats and communities

• The rising sea level will increase the levels of CO2 released by volcanic eruptions

• The rising sea level will impact coral bleaching in the Great Barrier Ree

• The rising sea level will increase the levels of CO2 by burning fossil fuels

Tags

NGSS.HS-ESS2-2

NGSS.HS-ESS3-1

NGSS.HS-ESS3-5

Which is most likely the cause of increased sea levels?

• increase in recycling

• destruction of forests

• increase in melting sea ice and melting glaciers

• increase in severe weather patterns of rainfall and snowfall.

Tags

NGSS.HS-ESS3-5

The composition of the atmosphere is represented by the model. Which gas is represented by the blue and red box

• carbon dioxide, oxygen

• nitrogen, oxygen

• oxygen, nitrogen

• nitrogen, carbon dioxide

Which statement best identifies a major difference in composition between the atmosphere of Mars and Earth?

• Earth does not have water vapor in the atmosphere while Mars does

• Earth’s gas with the largest percentage is nitrogen while Mar’s gas with the largest percentage is carbon dioxide.

• Earth has a large percentage of argon and Mars has a very small percentage of Argon

• Mars has a large percentage of oxygen and Earth has a small percentage of oxygen.

Trace gases are composed of small amounts of gases such as carbon dioxide, water vapor, and methane. Which of these will most likely increase the amount of a trace gas in the atmosphere?

• planting trees

• installing solar panels on a home

• a coal plant burn fossil fuels

• a bacterium releases oxygen

Tags

NGSS.MS-ESS3-4

Sea ice extent is a measure of the surface area of the ocean covered by sea ice. What is the overall trend displayed by the graph?

• no change

• increased in both the March and September months.

• decreased in both the March and September months

• increased in the September months but decreased in the March months.

Tags

NGSS.MS-LS2-4

Which of the following choices accurately labels these gases based on their percentages in the atmosphere?

• argon, nitrogen, carbon dioxide

• carbon dioxide, nitrogen, oxygen

• carbon dioxide, oxygen, nitrogen

• oxygen, nitrogen, carbon dioxide