Unit I: Earth's Changing Environment Review

A student examined a patch of mud and recorded several statements about footprints in the mud. Which statement is most likely an inference?

• There are five footprints in the mud

• The depth of the deepest footprint is 3 centimeters

• The footprints were made by a dog

• The footprints are oriented in an east-west direction

A student measures the velocity of the water in a stream as 2.5 meters per second. The actual velocity of the water is 3.0 meters per second. What is the approximate percent deviation of the student's measurement?

• 0.50%

• 17%

• 20%

• 50%

A student measures the volume of water as 72 milliliters when the true volume is 75 milliliters. Which equation should be used to determine the student's percent deviation?

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The diagram provided represents a solid object with a density of 3 grams per cubic centimeter. What is the mass of this object?

• 0.5 g

• 2 g

• 18 g

• 36 g

Science investigators initially use classification systems to

• extend their powers of observation

• make more accurate inferences

• organize their observations in a meaningful way

• make direct comparisons with standard units of measurement

Which action can be performed most accurately using only the human senses?

• counting 28 shells on a beach

• tearing a sheet of paper into squares whose sides measure 1 centimeter

• adding 10 grams of salt into a cup of water

• measuring the air pressure in the room

Tags

NGSS.MS-LS1-8

A rock sample has a mass of 16 g and a volume of 8 cm³. When the rock is cut in half, what is the volume and density of each piece?

• 8 cm³ and 0.5 g/cm³

• 8 cm³ and 1.0 g/cm³

• 4 cm³ and 2.0 g/cm³

• 4 cm³ and 4.0 g/cm³

A student filled a graduated cylinder with 1,000mL of water to represent a radioactive substance. After 30 seconds, the student poured out one-half of the water in the cylinder to represent the decay occuring within the first half-life. The student repeated the process every 30 seconds. How much water did the student pour from the cylinder at the 2-minute mark?

• 12.5mL

• 62.5mL

• 125.0mL

• 250.0mL

An example of a noncyclic change is the occurence of

• earthquakes

• ocean tides

• phases of the moon

• seasons of the year

Tags

NGSS.MS-ESS3-2

A list of 3 observed relationships is shown below.

*Erosional rate = depositional rate

*Amount of insolation = amount of terrestrial radiation

*Rate of condensation = rate of evaporation

In which situation would each relationship exist?

• when a cyclic change occurs

• when a change of state occurs

• when dynamic equilibrium is reached

• when global warming ceases and global cooling beings

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4