地质时间

What is the age of the oldest material from Earth?

• 4.4 billion years

• 4.04 billion years

• 4.55 billion years

• 2.5 billion years

What is the age of the oldest rock from Earth?

• 4.4 billion years

• 4.04 billion years

• 4.55 billion years

• 2.5 billion years

What is the age of the Earth?

• 4.4 billion years

• 4.04 billion years

• 4.55 billion years

• 2.5 billion years

What is radiometric dating also known as?

• Relative age dating

• Absolute age dating

• Steno's principles

• Half-life dating

What do we use to determine absolute ages in radiometric dating?

• Decay products of radioactive elements

• Fossils

• Strata

• Unconformities

Which kind of rocks can be dated using radiometric decay?

• Sedimentary rocks

• Metamorphic rocks

• Igneous rocks

• Volcanic rocks

How was the geologic time scale developed?

• By studying fossils

• By analyzing rock layers

• By measuring radioactive decay

• By studying climate change

What do unconformities indicate?

• The presence of fossils

• The age of the rock

• Missing time in the rock record

• The rate of radioactive decay

What determines a time boundary?

• Appearance of new species

• Shifts in climate

• Natural catastrophes

• All of the above

During which eon did the differentiation of Earth's layers occur?

• Hadean Eon

• Archean Eon

• Proterozoic Eon

• Phanerozoic Eon