MAAP 8th Science Practice Test 2021

Some scientists study asteroids that could potentially impact Earth. Which mechanism could be used to best protect against this type of possible natural hazard?

• satellites to calculate the mass and acceleration of asteroids

• Doppler radar to measure the direction and speed of asteroids

• rockets to push asteroids and change their direction and speed

• probes to land on asteroids and detect their mass and acceleration

Tags

NGSS.MS-ESS3-2

NGSS.MS-PS2-1

Drag and drop the name of each part in the boxes to best complete the model.

​

a

b

c

Chromosome

DNA

Gene

Tags

NGSS.MS-LS3-1

The student observes that the shorter straws produce sounds with a higher pitch. Which set of information identifies and explains the characteristic of sound that the student observes?

• Characteristic: amplitude - Explanation: Sounds with higher pitches have greater amplitudes.

• Characteristic: amplitude - Explanation: Sounds with lower pitches have greater amplitudes.

• Characteristic: frequency - Explanation: Sounds with lower pitches have greater frequencies.

• Characteristic: frequency - Explanation: Sounds with higher pitches have greater frequencies.

The student wants to investigate how sound waves from the straw horn interact with different materials. Which wave property should be tested, and which method should be used to test it?

• Wave property: absorption Method: playing the straw horn in a room with hard surfaces and a room with soft surfaces

• Wave property: absorption Method: making several sounds from straws of different lengths

• Wave property: pitch Method: playing the straw horn in a room with hard surfaces and a room with soft surfaces

• Wave property: pitch Method: making several sounds from straws of different lengths

Tags

NGSS.MS-PS4-2

The plant population grew in an area with high winds and many organisms that feed on short vegetation. Which statement best explains the change in the plant population after selection?

• Plants with narrow stems were more likely to survive than plants with wide stems.

• Medium-height plants were favored by conditions that harmed tall and short plants.

• Ground-feeding organisms favored short plants, resulting in a taller plant population overall.

• High winds reduced the survival rate of tall plants, resulting in a greater range of plant heights.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS1-5

The scratches on the bedrock suggest that the ______ were once connected nearer to the South Pole, and the ice flowed from ______.

(a)   (b)  

• landmasses
• oceans

• several different locations

• a central location
• low latitudes to higher latitudes

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

A student builds a simple guitar using rubber bands and a cardboard box. Plucking the rubber bands results in sound waves. Which step would best help the student investigate the effect of changing the resonance of the sound waves?

• adding more rubber bands to the guitar

• adding color patterns to the outside of the box

• using more force when plucking the rubber bands

• building a similar guitar using a larger or smaller box

Tags

NGSS.MS-PS4-2

Acid rain occurs when chemical pollution in the atmosphere reacts with atmospheric chemicals. This type of pollution is mainly released by burning fossil fuels to generate electricity, to power vehicles and heavy equipment, and to run industries such as manufacturing and oil refining.

Choose a phrase from each drop down menu to correctly explain one way humans could reduce the impact of acid rain on Earth’s ecosystems.

Increased ​ (a)   would reduce the impact of acid rain by reducing ​ (b)   .

• use of public transportation
• the amount of pollutants released by vehicles
• recycling of metals
• water conservation measures
• consumption of farmed seafood
• reliance on nonrenewable resources
• the pollution of water sources
• the effect of pollution on aquatic ecosystems

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

The models represent two reproduction processes. Select the three terms listed that describe only Model 1.

• meiosis

• offspring the same as parent

• sexual reproduction

• mitosis

• offspring different from parents

Tags

NGSS.MS-LS3-2

A population of birds lives in an ecosystem containing plants that produce different-sized seeds. There is genetic diversity among the individual birds in the population. The table shows the different genetic combinations determining sizes of bird beaks. After a long drought (period without rain) in the ecosystem, only plants with small-sized seeds are able to produce seeds. Which statement describes the effect that the drought would most likely have on the genetic diversity in the bird population?

• Individuals with BB would be less likely to survive because their food source would be less available.

• Individuals with BB would be more likely to survive because they can fill their beaks with many small seeds.

• Individuals with Bb would be more likely to survive because they can consume large-sized and small-sized seeds.

• Individuals with bb would be less likely to survive because their food source has less energy than large-size seeds.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS1-5

NGSS.MS-LS4-4