Relative/ absolute dating

Scientists use radioactive decay to measure...

• relative time
• absolute time
• half-lives
• time of day

The length of time required for half of the radioactive atoms in a sample to decay is its...

• era
• age
• half-life
• eon

How does absolute age differ from relative age?

• only absolute dating indicates which rock is older than another
• only absolute dating finds the age in years
• only relative dating finds the age in years

If the half-life of a radioactive group of atoms is 100 years, then how old is the rock if there have been two half-lives?

• 25 years
• 200 years
• 400 years
• 800 years

Tags

CCSS.HSF.LE.A.4

Which type of dating method can be used on rock layers by applying the Law of Superposition?

• relative dating
• absolute dating
• radioactive dating
• radiometric dating

How old is the Earth?

• 4.6 billion years
• 1.4 billion years
• 4.6 million years
• 6000 years

Relative dating of rock layers tells us that the deeper we dig, _______.

• the younger the rocks get
• the smellier the rocks get
• the harder the rocks get
• the older the rocks get

How does sedimentary rock usually form?

• Vertically
• Diagonally
• Folding
• Horizontally

Who is the person credited with developing the theory of continental drift?

• Harry Hess
• Galileo
• Alfred Wegener
• Newton

Which of the following is evidence that supports continental drift?

• the presence of penguins at both the equator and Antarctica
• fossils of the same plant have been found on several continents
• the presence of glacial features in Antarctica
• the presence of volcanic rock in Antarctica