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

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.

Which one of these is NOT soluble in water?

• oil

• salt

• honey

• sugar

Tags

NGSS.MS-PS1-2

What most likely happened to the liquids in the graduated cylinder?

• The oil will remain on the bottom because there is more of it.

• The oil will rise to the top because it is less dense than water.

• The oil will remain on the bottom because it was poured first.

• The oil will mix with the water and form a solution.

Tags

NGSS.MS-PS1-2

A cook may add more salt to soup before serving it. How does salt change when added to soup?

• The taste of the salt changes.

• The mass of the salt changes.

• The grain size of the salt changes.

• The salt disappears.

Tags

NGSS.MS-PS1-2

Which mixture maintained its physical properties?

• Pebbles and sand, sand and water, water and salt, salt and iron filings.

• Sand and water, water and salt, salt and iron filings

• Pebbles and sand, sand and water, salt and iron filings

• Pebbles and sand, salt and iron filings

Tags

NGSS.MS-PS1-2

• Heat from the candle produces currents of warm air.
• Heat from the candle produces electrical energy.
• Light from the candle produces mechanical energy.
• Light from the candle produces wind currents.

• The pedals, gears, and chain help turn the wheels.
• The wheels turn when the bicycle moves.
• The front wheel guides the bicycle as it moves.
• The reflector allows the bicycle to be seen at night.

Which object requires only mechanical AND electrical energy to perform its main function?

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What kind of circuit is this?

• series
• parallel