What's the longest time unit in geologic time scale?

• Period

• Eon

• Era

• Epoch

Tags

NGSS.MS-ESS1-4

Examples of mass extinction events? (Can pick more than 1)

• Meteorite

• Volcanic eruptions

• Hurricanes

• Earthquakes

• I don't know

Tags

NGSS.MS-LS4-1

Epochs are the_________unit in geologic time scale. (Fill the blank)

Tags

NGSS.MS-ESS1-4

How many geologic time scales are there?

• 5

• 6

• 7

• 4

• 3

Tags

NGSS.MS-ESS1-4

According to the fossil record, when did life first appear on Earth?

• 35,000 years ago

• 3.5-3.8 billion years ago

• 350,000 years ago

• 350 years ago

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

What can scientists learn from studying the relationships between fossils?

• how old all rock layers are

• how life changed over time

• how many relatives fossils had

Tags

NGSS.MS-LS4-1

A group of researchers excavated a piece of sedimentary rock and studied its composition. What can the researchers understand from the study?

• how organisms built their shelters in the rocks

• how life forms on Earth changed over time

• how plants grew inside the spaces between the rocks

• how some animals preyed on others for food

Tags

NGSS.MS-LS4-1

The study of the changes in Earth's life over space and time through the study of rock units and the fossils contained within them.

• lithology

• geology

• mineralogist

• paleontology

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

NGSS.MS-LS4-2

During a school project on ancient life forms, Maya discovers a series of fossils of the same organism. What does this primarily provide evidence for?

• The age of the Earth

• The extinction of species

• The evolution of life on Earth

• The stability of Earth's climate

Answer explanation

The discovery of fossils primarily provides evidence for the evolution of life on Earth, showcasing the development and changes in organisms over time.

Tags

NGSS.MS-LS4-1

How did breathable oxygen get into our atmosphere?

• Stromatolites and photosynthesis

• Trilobites and photosynthesis

• One celled organism and respiration

• Trees and early grasses

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3