Midyear REVIEW

Based on the data table, which mystery substance floats, is liquid, is non-magnetic and is an insulator?

• mystery substance F

• mystery substance C

• mystery substance E

• mystery substance A

What two measurements are used to determine speed?

• distance divided by time

• time divided by distance

• length times mass

• length divided by distance

Answer explanation

Example if you travel 100 centimeters in 25 seconds then your speed is 4 miles per second.

Tags

NGSS.MS-PS3-1

Select the correct answer based on the moon observations ONLY.

• The moon is patterning toward a full moon.

• The visibility of the moon is decreasing each day.

• The moon is 60% visible.

• The moon will be a full moon in 10 days.

Answer explanation

Solely based on observations, we can say that the moon visibility is decreasing. We can infer that it is working toward a new moon and estimate the time it will be until the full moon, but observations only show decreasing visibility.

Tags

NGSS.MS-ESS1-1

What change in matter is occurring in the image?

• decaying

• cooking

• burning

• rusting

Answer explanation

Rust is an iron oxide, a usually reddish-brown oxide formed by the reaction of iron and oxygen in the catalytic presence of water or air moisture.

Tags

NGSS.MS-PS1-2

Dylan documented the mass of a whole Poptart that was in a zipbag. He left the Poptart in the bag and then proceeded to break the Poptart in half. When he measures the mass again, what results should Dylan get?

• The mass will remain the same because all the crumbs are still in the bag.

• The mass will change because the Poptart has been broken.

Answer explanation

The law of conservation of mass is that an objects' mass is the sum of all its parts.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which tool would be most appropriate to determine how many student tables can fit in a room?

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Which image shows magnets attracting?

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Ice is water in which state?

• solid

• liquid

• gas

• heat

Tags

NGSS.MS-PS1-4

Which material is a good conductor of heat?

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Answer explanation

Materials that allow heat to pass through them easily are called good conductors of heat. The reason metals conduct heat so well is because the electrons in them can move around easily, and they can carry heat from one part to another.

Tags

NGSS.MS-PS3-3

Water converting to steam is what kind of change?

• chemical

• physical

Answer explanation

Water changing states is a physical change because it is still water.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5