Ost Science Review

What is the first thing a student should do if an accident happens during a science experiment?

• report to the teacher

• clean the laboratory station

• locate the nearest exit

• put on safety goggles

A wagon is pushed in a straight line. How would an increase in friction on the wagon wheels affect the wagon?

• It would cause the wagon to move faster

• It would cause the wagon to change mass.

• It would cause the wagon to change direction.

• It would cause the wagon to slow down.

Tags

NGSS.MS-PS2-2

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A runner measured the time it took him to run 5 km. What can he calculate from the distance and time measurements?

• direction

• mass

• speed

• force

Tags

NGSS.MS-PS3-1

Students observed a piece of iron change from shiny to rusty. What caused this change?

• a chemical reaction

• a heat reaction

• a cold reaction

• a physical reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which best explains why a storm that affects an area in the western United States may affect an area in the eastern United States a few days later?

• The jet stream winds blow storms from east to west.

• The jet stream winds blow storms from west to east.

• Cool Gulf Stream water causes storms to form in the east.

• Warm Gulf Stream water causes storms to form in the west.

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NGSS.MS-ESS2-6

Which is a characteristic of most single-celled organisms?

• They have a complex nervous system.

• They contain several different types of cells.

• They perform all life processes.

• They have a circulatory and a respiratory system.

Which statement best describes how a multicellular organism survives?

• Every cell carries out the same functions for the survival of the organism.

• The cells all have the same structures that allow the organism to survive.

• All life processes are performed by each cell for the survival of the organism.

• The cells have different functions, and together they are essential for the survival of the organism.

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NGSS.MS-LS1-3

What will be most affected if the decomposers in an ecosystem are removed?

• the spread of disease

• the availability of water

• the quality of soil

• the distribution of organisms

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NGSS.MS-LS2-3

NGSS.MS-LS2-4

A mother rabbit has a litter. One of the babies is born with one long ear and one short ear. What most likely caused this one rabbit to be born with one short ear?

• The mother rabbit had previously lost an ear in an accident.

• The mother rabbit became sick before she gave birth.

• A mutation occurred during the development of this one rabbit.

• This one rabbit received less nutrition than the other rabbits before it was born.

Tags

NGSS.MS-LS3-1

Which is an example of a trait that is inherited?

• dimples

• intelligence

• weight

• favorite color

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NGSS.MS-LS3-2

NGSS.MS-LS4-4