6th-8th Grade Practice 1

Which of these best describes a relationship shown by this African energy pyramid?

• The lion is a predator of the giraffes

• The lion is the prey of the giraffes

• Giraffes are the prey of the trees

• Giraffes are predators of the lion

Tags

NGSS.MS-LS2-3

In this diagram of a single-celled organism, which organelle functions as a place to store extra water?

• Cell membrane

• Vacuole

• Cytoplasm

• Nucleus

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

What is the role of the Orca in this food chain?

• Producer

• First-order consumer

• Second-order consumer

• Third-order consumer

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-3

C + O₂ → CO₂

According to this equation, what happened to the carbon and oxygen?

• They combined chemically to form a new compound.

• They combined chemically to form carbon and oxygen.

• They combined physically to form a new mixture.

• They combined physically to form a new element.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The illustration shows a wave. The wave's wavelength is the distance between points -

• 1 and 2

• 1 and 4

• 2 and 3

• 2 and 4

Tags

NGSS.MS-PS4-1

All of these can be inherited by people EXCEPT -

• height

• eye color

• blood type

• language

A tapeworm lives in human intestines, absorbing the nutrients that would normally be absorbed by the person. This eventually causes the person health problems. The relationship between the tapeworm and the human is -

• parasite/host

• predator/prey

• herbivore/omnivore

• consumer/producer

Mendel proposed that traits observed in pea plants resulted from a combination of "factors" inherited from each parent. His description of these "factors" can be considered the first scientific definition of the role of -

• ribosomes

• meiosis

• genes

• cell nuclei

Tags

NGSS.HS-LS3-1

A student designs and builds a 1:1000 scale model of the Mt. Fuji volcano in Japan. Since Mt. Fuji is about 3,800 m high, what is the height of his scale model?

• 0.38 m

• 3.8 m

• 380 m

• 3,800 m

Tags

NGSS.MS-ETS1-4

Each student in a science class of 25 conducts the same experiment. One student gathers all the data from her classmates and summarizes the results of the experiment for the class. She compares the data she personally recorded with the class data. Which of these might indicate to her that her results are valid?

• Three other classes performed the same experiment.

• The same experiment was repeated two years in a row.

• Many other students recorded data similar to hers.

• Another student in her class reached a different conclusion.