History of the Earth Review

The History of Planet Earth

Dropdown

Earth’s history can be interpreted from the ​

Select answer

.

Multiple Choice

The current geological time era, called the Cenozoic Era, gave rise to these species.

• Mammals

• Reptiles

• Birds

• Fish

Match

Match the following

• Oldest rock at the bottom, youngest at the top.

• a numeric age of rocks or fossils using radiometric dating

• the study of rock strata.

Relative Dating

Absolute Dating

Stratigraphy

• Relative Dating

• Absolute Dating

• Stratigraphy

Multiple Choice

Is used to measure the age of previously living things.

• Carbon-14

• Carbon-12

• Uranium 265

• Uranium 365

Dropdown

Isotopes are Elements with a ​

Select answer

number of ​

Select answer

.

Multiple Choice

Preserved remains of plants and animals from the remote past are called?

• Sedimentary rocks

• Radioactive dating

• Decayed organisms

• Fossils

Multiple Choice

The Law of Superposition states

• Younger rocks layers are on top of older rock layers

• Fossils are found in sedimentary rocks

• Older rock layers are on top of younger rock layers

• Absolute age dating

Multiple Choice

Use relative age dating to put the rock layers in correct order from oldest to youngest.

• B, D, A, E, C

• C, E, D, A, B

• A, C, E, D, B

• C, E, D, B, A

Multiple Choice

Which rock layer is oldest from Site 1?

• G

• B

• A

• E

Multiple Choice

Which of the fossils is the oldest?

• Dinosaur

• Bird

• Shell

• Ammonite

Multiple Choice

Which period are we currently in?

• Quaternary

• Holocene

• Jurassic

• Tertiary

Multiple Choice

Scientists use radioactive decay to measure...

• relative time

• absolute time

• half-lives

• time of day

Multiple Choice

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

Multiple Choice

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

Multiple Choice

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

• the relative age of something

• age

• half-life

• eon

Multiple Choice

How is carbon-12 different from carbon-14?

• They have a different number of protons

• they have a different number of electrons

• they have a different number of neutrons

Multiple Choice

Fossils show evidence of

• how life and environment have stayed stable over time

• how climate and weather have stayed stable over time

• how the environment has changed and life stayed stable

• how the environment and life has changed over time

Multiple Choice

Fossils such as _______ provide evidence of past life and environmental conditions

• shells and footprints

• rocks and sand

• hieroglyphics

• rare minerals

Multiple Choice

Some scientists believe that life on Earth began 4.5 billion years ago. What do they base this belief on?

• the distance from the Earth to the sun

• the fossil record

• the time it takes to orbit the Earth

• the thickness of the mantle

Multiple Choice

As the body plan of the fish progressed, the first sharks appeared during the Silurian Period. The skeletons of these ancient fish are hard to find because their skeletons are composed of

• calcium

• muscle

• bone

• cartilage