Geologic Time

How old is the Earth?

• 4.6 million years

• 4.6 billion years

• 4.6 trillion years

• 4.6 quadrillion years

Tags

NGSS.MS-ESS1-4

What is the term used to describe Earth's changing geology?

• Geologic time

• Paleozoic era

• Mesozoic era

• Cenozoic era

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

What is the oldest and longest period in Earth's history?

• Precambrian

• Paleozoic era

• Mesozoic era

• Cenozoic era

Tags

NGSS.MS-ESS1-4

What is the Law of Superposition?

• The oldest rock layers are on top and the youngest are on the bottom

• The youngest rock layers are on top and the oldest are on the bottom

• The rock layers are randomly arranged

• The rock layers have no specific order

Tags

NGSS.MS-ESS1-4

What is the current geologic period called?

• Precambrian

• Paleozoic era

• Mesozoic era

• Holocene

What is the term used to describe the permanent loss of a species?

• Extinction

• Evolution

• Fossilization

• Decay

Tags

NGSS.MS-LS4-1

Which of the following statements about the fossil record is true?

• all organisms become fossils
• organisms having soft body parts make up most of the fossils
• all organisms that have shells become fossils
• the fossil record is incomplete

Tags

NGSS.MS-LS4-1

What type of rock do fossils form in?

• Igneous
• Sedimentary
• Metamorphic
• Classic

Tags

NGSS.MS-LS4-1

Why is the fossil record incomplete?

• fossils get eroded away over time
• most organisms never became fossils
• scavengers and decomposers eat them too quickly
• all of the above

Scientists chose where units of geologic time began and ended based on major changes in life forms at certain times.

• true
• false

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1