History of life

Most fossils occur in layers of ______________________ rocks.

• Sedimentary
• Igneous
• Metamorphic
• Fossil

Scientist theorize that oxygen buildup in the atmosphere resulted from _________________ .

• respiration
• photosynthesis
• chemosynthesis
• rock weathering

Tags

NGSS.MS-LS1-6

What were Earth's first living organisms?

• Photosynthetic eukaryotes
• Photosynthetic prokaryotes
• Anaerobic prokaryotes
• Anaerobic eukaryotes

TRUE OR FALSE: The deeper the rock is in the Earth, the newer it is.

• True
• False

Tags

NGSS.MS-ESS1-4

TRUE OR FALSE: Life started on Earth 3.5 billion years ago.

• True
• False

______________ were the first organisms on Earth.

• humans
• dinosaurs 
• multicellular eukaryotes
• single-celled prokaryotes  

A _________ is evidence of an organism that lived long ago.

• strata
• fossil
• half-life
• radioactive isotope 

physical evidence of an organism that lived long ago

• petrification
• fossil

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

________ is the amount of time for ½ of the original radioactive sample to decay. 

• radioactive isotope 
• chemical life 
• biological life 
• half-life 

Tags

NGSS.HS-PS1-8

Method used to date fossils in which the decay of radioactive isotopes is measured. 

• radiometric dating
• paleomagnetism
• relative dating 
• radioactivity 

Tags

NGSS.HS-PS1-8