Study

A geologist studies two layers of sandstone that exist along opposite coasts of North America. Which characteristic of the layers provides the best evidence that they were deposited about the same time>

• particle sizes of the sand in the rock layer

• the rock layers' chemical composition

• the depth of the rock layers from the surface layer

• the fossils found in the rock layer

Tags

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

The diagram shows early embryological stages of a reptile, a bird, and a human. What do the similarities among the embryos suggest?

• The organisms have the same genetic structure.

• The organisms evolved from a common ancestor.

• The organisms appeared on Earth at the same time.

• The organisms are adapted to live in similar environments.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

By studying fossil records, scientists have concluded that the horses that lived 50 million years ago were much smaller, weaker, and slower than modern horses. Which natural process is responsible for the evolutionary changes that have lead to increased size, strength, and speed in horses?

• inbreeding

• migration

• mutualism

• natural selection

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Which scientific method step involves making an educated guess that can be tested?

• Observation

• Hypothesis

• Experimentation

• Conclusion

What is the primary purpose of a control group in an experiment?

• To provide a standard for comparison

• To increase the sample size

• To ensure the experiment is ethical

• To eliminate all variables

In a chemical reaction, what does the law of conservation of mass state?

• Mass is created during a reaction

• Mass is destroyed during a reaction

• Mass is conserved and remains constant

• Mass is irrelevant to chemical reactions

Tags

NGSS.MS-PS1-5

Which of the following is an example of a renewable energy source?

• Coal

• Natural Gas

• Solar Energy

• Nuclear Energy

What is the role of chlorophyll in photosynthesis?

• Absorbs water

• Absorbs sunlight

• Releases oxygen

• Stores glucose

Tags

NGSS.MS-LS1-6

Which part of the cell is responsible for producing energy?

• Nucleus

• Ribosome

• Mitochondria

• Golgi apparatus

Tags

NGSS.MS-LS1-2

What is the main function of red blood cells?

• Fight infections

• Transport oxygen

• Clot blood

• Produce hormones