Earth Science Prologue

The reason ice floats is that, compared to liquid water, solid ice

• has less mass

• has more mass

• is less dense

• is more dense

The diagram represents a rectangular object with a mass of 450 grams. What is the density of the object?

• 1 gram per cubic centimeter

• 2 grams per cubic centimeter

• 3 grams per cubic centimeter

• 4 grams per cubic centimeter

Using a ruler to measure the length of a stick is an example of

• predicting the length of the stick by guessing

• extending the sense of sight by using an instrument

• calculating the percent of error by using a proportion

• measuring the rate of change of the stick by making inferences

Assume a cube was broken into many irregularly shaped pieces. Compared to the density of the entire cube, the density of one of the pieces would be

• less

• greater

• the same

• depend one how big the cube was to begin with

Which statement about a major hurricane is an inference?

• The windspeed is measured at 200 km/hr.

• The central air pressure is recorded at 946.0 mb.

• A rain gauge records three inches of rain in less than one hour.

• Damage from the storm is expected to be extensive.

Tags

NGSS.MS-ESS3-2

A glass sphere and a lead sphere have the same volume. Each sphere is dropped into a container of water. Which statement best explains why the lead sphere settles faster?

• The lead sphere has a higher density.

• The glass sphere has a smoother surface.

• The lead sphere takes up less space.

• The glass sphere has more surface area.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

The primary purpose of a classification system is to enable people to

• make measurements that are very accurate

• eliminate inaccurate inferences

• organize observations in a meaningful way

• extend their powers of observation

Tags

NGSS.MS-LS4-1

Jack has a rock. The rock has a mass of 14g and a volume of 2cm³. What is the density of the rock?

• 7 mL

• 7 g/cm³

• 28 g/cm³

• 1/7 g/cm³

Frank has an eraser. It has a mass of 4g, and a volume of 2cm³. What is its density?

• 8 g/cm³

• 2 g/cm³

• 1/2 g/cm³

• 24 g/cm³

What is the formula for density?

• density = mass x volume

• density = mass / volume

• density = mass + volume

• density = mass - volume