QUIZ-EARLY EARTH Atmosphere

Q: What gases entered Earth’s early atmosphere due to the outgassing of volcanoes?

• Oxygen, Hydrogen, and Helium

• Water vapor, carbon dioxide and nitrogen

• Carbon dioxide, oxygen, and hydrogen

• Nitrogen, oxygen, and water vapor

Tags

NGSS.HS-ESS1-6

Q: Why was an oxygen rich atmosphere important for the evolution of life?

Choose all that apply

• Most animals depend on oxygen for respiration

• Cyanobacteria need oxygen to live

• Ozone molecules (made of 3 oxygen atoms) filter out UV radiation from the sun.

• All answers are true

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-5

Q: What evidence do scientists use to support their claim that ancient cyanobacteria produced oxygen?

• Cyanobacteria fossils have been found in rocks in shallow waters

• The absences of iron oxides in rocks after Hadeon, Early Archean.

• The presence of iron oxides in rocks of the early Proterozoic eon (3.5 bya)

• All answers are correct

Tags

NGSS.HS-LS2-5

Banded-iron formations contain high concentrations of iron oxides. What is the relationship between banded-iron formations and oxygen gas?

• Oxygen must be present in the atmosphere in order for banded-iron formations to form.

• Banded-iron formations must be present for oxygen to form in the atmosphere.

Q: Where did the water that ended up in Earth’s oceans originate from?

• Cyanobacteria undergoing photosynthesis

• Volcanic outgassing.

• Asteroid, meteorite, and other space object bombardment.

• All answers are true

: Why is the search for life elsewhere in the solar system often centered on the search for water?

• Water vapor creates life

• Water is refreshing.

• All life as we know it depends on water to survive.

• all answers are true

Tags

NGSS.HS-ESS2-5

Q: Which option is NOT a scientific explanation for the origin of life on Earth?

• Life originated on Earth’s surface in warm, shallow oceans.

• Cyanobacteria colonies were brought to Earth in asteroids or comets.

• Life originated in hydrothermal vents deep in the oceans.

• Organic molecules were brought to Earth in asteroids or comets.

 What do scientists believe prevented life from existing on Earth before 3.9 bya?

• Earth was too cold before 3.9bya.

• There wasn’t enough iron oxides on Earth before 3.9bya.

• Earth was being bombarded by asteroids and meteorites.

• All answers are true

Using the graph of the formation of free oxygen, how many billion years ago did oxygen appear?

• 2.5 bya

• 2 mya

• 1 bya

• 3.5 bya

Tags

NGSS.HS-ESS1-6

Atmosphere #1, Which elements/molecules were present?

• Hydrogen

• helium

• carbon dioxide

• water

Tags

NGSS.HS-ESS2-6