Geologic Time-Exam 2: 2025-26

The age of the Earth is estimated to be about how old?

• 13.2 trillion years

• 13.2 billion years

• 4.5 billion years

• 4.6 million years

Tags

NGSS.HS-ESS1-6

The "age of the reptiles" is considered which era of geologic time?

• Mesozoic

• Precambrian

• Cenozoic

• Paleozoic

Tags

NGSS.MS-ESS1-4

What is the gas responsible for blocking out UV radiation?

• O2 (Oxygen)

• O3 (Ozone)

• CO2 (Carbon Dioxide)

• CH4 (Methane)

What is the most abundant (What we have most of) gas in the atmosphere today is?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Methane

What is the chemical formula for ozone?

• O3

• O2

• N3

• CO3

Tags

NGSS.MS-PS1-1

The era known as the "age of Mammals" is the?

• Mesozoic

• Paleozoic

• Precambrian

• Cenozoic

Tags

NGSS.MS-ESS1-4

88% of all of earth's history is found with this era? (Longest Era)

• Mesozoic

• Precambrian

• Paleozoic

• Cenozoic

Tags

NGSS.MS-ESS1-4

The process responsible for introducing oxygen into the atmosphere is?

• Respiration

• Photosynthesis

• Accretion

• Nitrogen Fixing

Tags

NGSS.MS-LS1-6

Most life on earth during the late Precambrian era was found

• Just below the surface of topsoil

• All over the surface of the earth

• Just below the surface of ocean water

• Near volcanoes

The most likely cause of the extinction of the dinosaurs was

• Asteroid impact

• Volcanic activity

• Climate change

• Human activity

Tags

NGSS.MS-LS4-1