Mission 3: Analyzing the Evidence

The time it takes for 50% of the nuclei in a radioactive sample to decay to its stable isotope is called _____.

• the daughter product
• geologic time
• the half-life
• the half-time

Tags

NGSS.HS-PS1-8

According to the graph, what fraction of the original parent isotope still exists after 3 half lives?

• 0,5000 g
• 0,2500 g
• 0,1250 g
• 0.0625 g

Tags

NGSS.HS-PS1-8

The Law of Superposition helps scientists to determine what?

• The absolute age of rock layers
• The age of fossils
• The relative age of rock layers
• the super powers of rocks

Tags

NGSS.MS-ESS1-4

According to the law of superposition, the oldest fossils are found 

• At the top of the rock layers
• Near the bottom of the rock layers
• In the middle of the rock layers
• Somewhat near the surface

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

_{Which rock layer in the diagram seems to be the oldest?}

• F
• E
• B
• A

Tags

NGSS.MS-ESS1-4

According to the law of superposition, which layer is the youngest?

• A
• B
• C

Tags

NGSS.MS-ESS1-4

The rock formation labeled "P" is a(n)...

• fault
• intrusion
• inclusion
• unconformity

Tags

NGSS.MS-ESS1-4

Which type of fossil is pictured?

• petrified fossil

• original remains

• mold

• cast

Tags

NGSS.MS-LS4-1

What type of fossil is this? Hint it is 3 dimensional.

• Mold

• Carbon flim

• Cast

• Original Remains

Tags

NGSS.MS-LS4-1

An______is an organism that lived for a short amount of time , were plentiful, and lived in a wide geographical area.

• index fossil

• mold fossil

• cast fossil

• carbon film

Tags

NGSS.MS-LS4-1