Unit 1 Review

In the classroom during a visual inspection of a rock, a student recorded four statements about the rock. Which statement about the rock is an observation?

• The rock formed deep in the Earth's interior.

• The rock cooled very rapidly.

• The rock dates from the Precambrian Era.

• The rock is black and shiny.

The best example of an inference is a

• reading of atmospheric pressure

• measurement of air temperature

• weather forecast for 3 days

• determination of dewpoint temperature

The final arrangement of the natural gas, oil, and water within the sandstone was caused by differences in their

• density

• specific heat

• relative age

• radioactive half-life

As air on the surface of Earth warms, the density of the air

• decreases

• increases

• remains the same

A mineral is placed in a container of water, and it sinks to the bottom of the container. Compared to the density of water, the density of this mineral is

• less

• greater

• the same

A mineral is broken into many irregularly shaped pieces. Compared to the density of the original sample, the density of one of the pieces would be

• less

• greater

• the same

Which mineral sample has the highest density?

 $Density\ =\ \frac{mass}{volume}$  

• A

• B

• C

• D

Under the same conditions of temperature and pressure, three different samples of the same mineral will have the same

• shape

• density

• mass

• volume