End of Year Science Review

Which project is MOST LIKELY to interest a scientist working at a biotechnology company?

• study and reconstruction of fossilized bones

• conservation of key species within ecosystems

• development of genetically modified corn plants

• prevention of sewage leaking into water supplies

Tags

NGSS.MS-LS4-5

Which source of water pollution includes oil and gasoline discharge from automobiles and storm sewer discharge?

• agriculture

• sedimentation

• bacteria

• urban runoff

Which BEST describes a bio-indicator?

• a species that has a short life span

• a species that depends on specific conditions to survive

• a species that can adapt to a variety of conditions

• a species that has been introduced to an ecosystem

What characteristic of aluminum allows it to be made into aluminum foil?

• It is dense.

• It is soluble.

• It is magnetic.

• It is malleable.

Which substance is composed of more than one element?

• water

• carbon

• gold

• sodium

Tags

NGSS.MS-PS1-1

Which examples represent parasitic relationships?

• 1 and 3

• 1 and 4

• 2 and 3

• 2 and 4

Tags

NGSS.MS-LS2-3

A teacher asks her students to classify the substances listed in the table shown as elements, compounds, or mixtures. A student claims that all of the substances are compounds. Which statement correctly describes the student’s claim?

• The student’s claim is correct because a substance that contains more than two of the same atom is a compound.

• The student’s claim is incorrect because a substance that contains more than one element is always a mixture.

• The student’s claim is incorrect because the atoms in the substances are physically combined to form a mixture.

• The student’s claim is correct because the atoms in the substances are chemically combined to form a compound.

Tags

NGSS.MS-PS1-1

Which step of water treatment requires an addition of chlorine?

• aeration of water

• disinfection of water

• filtration of impurities

• sedimentation of impurities

Tags

NGSS.MS-PS1-2

The graph shows the percentage of crops pollinated by honey bees in the United States.

It has been estimated that more than 10 million beehives were lost in 2013 in the United States due to colony collapse disorder caused by the widespread use of pesticides. How will the decrease in the honey bee population affect the ecosystem?

• It will increase the percentages of almond and apple crops because insects other than honey bees will help pollinate these crops.

• It will increase the percentages of cotton and orange crops because these are less dependent on honey bee pollination.

• It will decrease the percentages of almond and apple crops because lesser numbers of honey bees are available for pollination.

• It will decrease the percentages of cotton and orange crops because the populations of other insects will also decline along with honey bees.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

A student places a piece of magnesium metal in a test tube containing acid. The student records four observations during the experiment.

Which observation describes a chemical change?

• A. #1

• B. #2

• C. #3

• D. #4

Tags

NGSS.MS-PS1-2