Unit 1-LT#2-Era's Atmosphere

What kind of gas was mainly in the Earth's atmosphere during the precambrian era?

• Carbon dioxide

• Oxygen

• Nitrogen

• Sulfur

When was oxygen the main gas present?

• Precambrian and Paleozoic

• Paleozoic and Mesozoic

• Mesozoic and Precambrian

• Cenozoic and Mesozoic

What caused the carbon dioxide in the precambrian era?

• Volcanoes

• Plants

• Animals

• Fungi

What led to the nitrogen in the air during the Cenozoic era?

• Plants and fungi

• Plants and animals dying

• Volcanoes

• Animals evolving

Where does the oxygen come from in the Paleozoic and Mesozoic eras?

• Volcanoes produce oxygen

• Plants give off oxygen

• Animals breath out oxygen

Tags

NGSS.MS-LS1-6

What is the order of how the atmosphere gases came about in our Earth's eras?

• Carbon dioxide --> nitrogen --> oxygen --> nitrogen

• Carbon dioxide --> oxygen --> nitrogen --> water

• Nitrogen --> oxygen --> carbon dioxide --> nitrogen

• Carbon dioxide --> oxygen --> oxygen --> nitrogen

What era did green plants (like ferns) thrive?

• Paleozoic

• Cenozoic

• Mesozoic

• Precambrian

Tags

NGSS.MS-ESS1-4

Which era had volcanoes erupting all over the Earth's surface?

• Paleozoic

• Cenozoic

• Mesozoic

• Precambrian

Which era had large reptiles roaming the Earth?

• Mesozoic

• Precambrian

• Paleozoic

• Cenozoic

Tags

NGSS.MS-ESS1-4

What is the gas we, as humans, mainly breath in?

• Oxygen

• Nitrogen

• Carbon dioxide

• Water vapor