Check-In Review 1

Front

What are estuaries known as?

Back

Estuaries are known as the 'Nurseries of the Sea'.

Front

Why are wetlands important to nearby communities?

Back

Wetlands help protect nearby areas from floods by absorbing excess water.

Front

What is the best method for determining the exact age of a rock sample?

Back

The best method is radiometric (radioactive) dating.

Front

What do geothermal and solar energy have in common?

Back

Both are renewable sources of energy.

Front

If layer 4 of a rock stack is 400 million years old and layer 1 is 500 million years old, what is the age of layer 2?

Back

Layer 2 is between 400 million and 500 million years old.

Front

What is a wetland?

Back

A wetland is an area where water covers the soil, either permanently or seasonally.

Front

What is the law of superposition?

Back

The law of superposition states that in undisturbed rock layers, the oldest layers are at the bottom.

Front

What is relative dating?

Back

Relative dating is a method used to determine the age of rocks by comparing them to other rocks.

Front

What is radiometric dating?

Back

Radiometric dating is a technique used to date materials by comparing the abundance of a radioactive isotope to its decay products.

Front

What are the two main types of wetlands?

Back

The two main types of wetlands are swamps and marshes.