Earth History

Relative dating is used to determine the

• actual date of an event

• length of time between two events

• age of one event compared with other events

• rate at which geological processes occur

The statement that sedimentary rock layers tend to be younger than the layers before them is called the

• theory of relativity

• principle of uniformity

• law of relative age

• law of superposition

Tags

NGSS.MS-ESS1-4

Epochs are divisions of

• all eras

• the periods of the Cenozoic era only

• all periods

• the Precambrian only

The principle of cross-cutting relationships states that an igneous intrusion or fault is

• always younger than the rock layer that it cuts across

• always older than the rock layer that it cuts across

• the same age as the rock layer it has cut across

What is the scientific age of the earth?

• 4,500,000 years

• 4.5 million years

• 45,000 years

• 4.5 billion years

Tags

NGSS.MS-ESS1-4

Which is the smallest division of geological time?

• epoch

• era

• period

• eon

Which is the largest division of geological time?

• epoch

• era

• period

• eon

Tags

NGSS.MS-ESS1-4

Absolute dating is used to determine

• estimated age of a rock or fossil

• how old a rock or fossil is compared to others

• the exact age of a rock or fossil

• why an animal went extinct

How long would it take 3/4 of a sample to decay if it's half life is 50 years?

• 50 years

• 150 years

• 100 years

• 200 years

Tags

NGSS.HS-PS1-8

An example of absolute dating is

• counting tree rings

• radioactive decay

• counting varve layers

• all of the above