Two wires carrying electricity can create a spark if they come to close to each other. What is a good insulator for this?

• Plastic can melt if it gets heated.

• Plastic is a good insulator.

• Plastic is a good conductor.

• Plastic is softer than wire.

A students puts 4 objects in a bucket filled with water. Which 2 objects are most likely less dense than water?

• Wood block and metal paper clip.

• Plastic ball and glass marble.

• Metal paper clip and glass marble.

• Wood block and plastic ball

The diagram above shows one container with oil and water and another with oil and a cork. Which diagram below shows what most likely would happen if oil, water, and the cork were all put in the same container?

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Tags

NGSS.MS-PS1-2

A cook uses the ingredients listed above. Which table below shows the physical properties of these ingredients when placed in hot water?

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Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

A teacher gives a student 4 clear sealed containers. Each container holds a different substance. The students record their observations about each substance. Based on these observations, which container most likely holds only gas?

• Container 1

• Container 2

• Container 3

• Container 4

Tags

NGSS.MS-PS1-4

Some students investigate the properties of matter of four objects using a hand lens, a magnet, and a beaker containing water. Their observations are recorded on the table. Which statement identifies a property that could be used to classify these objects into two different groups?

• Density can be used to separate objects that sink in water from objects that don't.

• Magnetism can be used to separate objects that are attracted to magnets from objects that are not.

• Solubility can be used to separate objects that dissolve in water from objects that do not.

• Physical state can be used to separate objects that are solid from objects that are not.

Tags

NGSS.5-PS1-3

A student classifies the above objects shown based on their physical properties. Which property cannot be used to classify these objects into more than one group?

• Magnatism

• Mass

• Electrical Conductivity

• Solubility in water

A science class tested 3 properties of different materials. The results are shown in the table above. Based on the table, which material would be best to use to insulate electrical wire?

• wood

• plastic

• copper

• steel

A student is asked to design a sleeve for a cup that will insulate thermal energy and not feel hot to the touch when the cup is filled with liquid. The students has 4 materials to choose from. Which of these materials is least useful as an insulator?

• cardboard

• aluminum

• rubber

• plastic

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

NGSS.MS-PS3-3

The student was asked to compare the masses of four blocks that were all the same size but made of different materials. Which list shows the blocks in order from least to greatest mass?

• BLOCKS N, M, L, P

• BLOCKS P, M, L, N

• BLOCKS N, L, M, P

• BLOCKS P, L, M, N