8th grade Science Assessment Review #1

A section of a rock layer is shown. The evidence from these rock layers supports which conclusion the best?

• Eurypterids are related to modern day scorpions and crabs.

• Eurypterids were the least common type of organism in this section of rock.

• The oldest fossils in this section of rock are trilobites.

• There is some overlap in the presence of brachiopods and ammonites on Earth.

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Imprints of the shells of ocean clams are often found in the rocks of the Appalachian Mountains. What is most likely indicated by these imprint fossils?

• Mountain river clams evolved from ocean clams.

• Ocean clams evolved from mountain river clams.

• These mountains once had a more rainy climate.

• These mountains were once under the ocean.

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

NGSS.MS-ESS2-3

The diagram shows different layers of sedimentary rock. Each layer is labeled with a letter. Which statement correctly describes the relative ages of the rock layers shown?

• Layer I is older than Layer B.

• Layer R is older than Layer M.

• The left part of Layer B is younger than the right part.

• The left party of Layer F is the same age as Layer M.

Tags

NGSS.MS-ESS1-4

Observations that deal with descriptions that cannot be expressed in numbers are called:

• manipulated observations

• operational observations

• qualitative observations

• quantitative observations

Which one of these is most likely a result from using pesticides on farm crops?

• air temperatures could increase

• caterpillars could become extinct

• rainfall levels could decrease

• water sources could become polluted

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Scientists have developed a number of ways in which farmers can reduce the amount of soil erosion. Which one of the following is not a way for farmers to reduce soil erosion?

• adding fertilizers

• contour farming

• rotating crops

• strip farming

A resource that is either always available or is naturally replaced in a relatively short period of time is called:

• efficiency

• energy conservation

• insulation

• nonrenewable resources

• renewable resources

Electromagnetic waves can transfer energy without a

• change in direction

• magnetic field

• medium

• thermogram

Tags

NGSS.HS-PS4-5

Which of these factors affects how fast a sound wave moves?

• the amplitude of the sound wave´s vibrations

• the kind of material it is moving through

• the type of motion that caused the sound wave to form

• the wavelength of the disturbance in the medium

Tags

NGSS.MS-PS4-2

In the model, a pencil begins by standing straight up in a glass before being moved to the side. You are looking through two different materials: at the top you are looking only through glass only, and at the bottom you are looking through the water in the glass. Which claim best describes the student model and observations shown?

• the broken pencil is an example of reflection and light waves

• the broken pencil is an example of reflection and sound waves

• the broken pencil is an example of refraction and light waves

• the broken pencil is an example of refraction and sound waves

Tags

NGSS.MS-PS4-2