Science

All matter can be classified by their physical properties. Which substance can be classified as being soluble in water?

• Sand

• Paper

• Iron Filings

• Salt

Which of these is the best insulator of electricity?

• Copper Penny

• Plastic Tubing

• Aluminum Foil

• Metal Washer

The chart below shows objects that conduct heat and objects that insulate heat. Which answer choice best completes the chart?

• Glass block

• Gold ring

• Plastic spoon

• None of the above

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Students perform an experiment and record their observations. The results are shown in the chart below.

What are the students most likely observing?

• Sinking and floating of objects

• Objects that are not magnetic

• Solids, liquids and gases

• Objects with the greatest density

A student reads the directions on a jar of all natural peanut butter.

Why do the directions suggest stirring the peanut butter?

• Oil from the peanuts separate from the mixture because it is less dense.

• Oil from the peanuts separate from the mixture because it is more dense.

• Salt from the peanuts cause the mixture to separate.

• Water from the peanuts cause the mixture to separate.

Tags

NGSS.MS-PS1-2

The diagram below shows what happens when four different cubes are placed in a container of water.

Which cube has the least buoyancy in water?

• Cube A

• Cube B

• Cube C

• Cube D

The diagram below shows two identical containers and their ingredients.

Which diagram shows what will happen if the two containers are combined?

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Tags

NGSS.MS-PS1-2

Magnets can attract or repel each other when placed together. Which picture shows a set of magnets that will repel?

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Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The picture below is an electrical wire.

What is the most reasonable answer for using copper in an electrical wire?

• Copper is a good insulator of electricity.

• Copper is magnetic.

• Copper is a good conductor of electricity.

• Copper is shiny.

Students sort materials into two groups. Group 1 contains a metal fork, a safety pin, and metal nail clippers. Group 2 contains a penny, a compact disc, and a soda can.

Which physical property of matter did the class use to sort the materials?

• Sinking and floating

• Magnetic and not magnetic

• Conductors and insulators

• Solids and liquids

Tags

NGSS.2-PS1-1