When CO₂ levels were low, temperatures were ______ and Earth was _____________.

• cooler; in an ice age (glacial period)

• cooler; warming (interglacial period)

• warmer; in an ice age (glacial period)

• warmer; warming (interglacial period)

Tags

NGSS.HS-ESS2-4

NGSS.HS-ESS2-6

NGSS.HS-ESS3-5

Oxygen 18 isotopes were collected from a coral core stretching from 1990 to 1940. Based on the change in Oxygen 18 isotopes, which of the conclusions below is supported by the data?

• This coral experienced an increase in water temperature from 1940 to 1990

• This coral experienced an decrease in water temperature from 1940 to 1990

• Oxygen 18 isotopes in this core increased from 1940 to 1990

• Oxygen 18 isotopes in this core decreased from 1940 to 1990

Tags

NGSS.HS-ESS2-2

NGSS.HS-ESS2-4

A greater amount of ¹⁸O in a foram ocean sediment sample means temperatures were _________ because there was ________ evaporation.

• colder; less

• colder; more

• warmer; less

• warmer; more

Types of indirect evidence that serve as substitutes for direct measurement. They shed light on past climate.

• Climate model

• Proxy indicator

• Global warming

• Global Climate change

The graph below shows global delta oxygen 18 levels for time scales in thousands of years ago (abbreviated as ky) until today. Based on this data, when was the global temperature at its lowest?

• 400,000 years ago

• 325,000 years ago

• 150,000 years ago

• 25,0000 years ago

Tags

NGSS.HS-ESS3-5

Heavier forms of oxygen contain:

• Extra atoms

• Extra valence electrons

• Extra neutrons

• Extra protons

Tags

NGSS.HS-PS1-8

If Oxygen 16 is less dense than Oxygen 18 which of the following statements are true

• Oxygen 16 will evaporate into clouds more than Oxygen 18

• Oxygen 18 will evaporate into clouds more than Oxygen 16

• Oxygen 16 will precipitate more in rain than Oxygen 18

• Oxygen 18 will precipitate more in rain than Oxygen 16

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Examine the delta oxygen 18 graph for ice cores near Greenland. Which of the following conclusions would be accurate based on this data? (CHECK ALL THAT APPLY)

• There is more oxygen 18 relative to the standard

• There is less oxygen 18 relative to the standard

• There was no cooling in the past 500,000 years

• There was a period of warming from 400,00 to 340,000 years ago

Tags

NGSS.HS-ESS2-2

NGSS.HS-ESS2-4

NGSS.HS-ESS3-5

Examine the delta oxygen 18 graph for ice cores near Greenland. During which of the following years did global warming occur? (CHECK ALL THAT APPLY)

• 500,000 to 4000 years ago

• 400,000 to 340,000 years ago

• 340,000 to 320,000 years ago

• 120,000 to 110,000 years ago

Tags

NGSS.HS-ESS2-4

NGSS.HS-ESS3-5

The graph below shows global delta oxygen 18 levels for time scales in thousands of years ago (abbreviated as ky) until today. Based on this data, when was the global temperature at its highest? (CHECK ALL THAT APPLY)

• 400,000 years ago

• 325,000 years ago

• 110,000 years ago

• Present Day

Tags

NGSS.HS-ESS2-4

NGSS.HS-ESS3-5