Grade 6 - Matter and Ecosystem Review

In what way are atoms of oxygen most different from atoms of nitrogen?

• They have different temperatures.

• They have different states of matter.

• They have different masses.

• They have different colors.

The melting point of a solid is 24.9 ⁰ C. As heat is added to melt the solid, what happens to the particles?

• The motion of the particles increases.

• The motion of particles decreases.

• The particles move farther apart.

• The particles move closer together.

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NGSS.MS-PS1-4

An example of a property of matter that can be observed without changing the identity of the matter is:

• flammability

• reactivity

• solubility

• ability to rust

Which of these best illustrates the correct order of flow of energy through a food chain?

• rabbit -> mouse -> grain -> sun

• rabbit -> grain -> mouse -> sun

• sun -> grain -> mouse -> rabbit

• sun -> mouse -> grain -> rabbit

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NGSS.MS-LS2-3

How can trees minimize water loss through the colder months of the year?

• Trees can use more sunlight for energy.

• Trees can add layers of bark.

• Trees can lose their leaves.

• Trees can grow more leaves.

Why do large trees have a difficult time living in a Tundra?

• A Tundra is too hot for trees to grow large.

• Animals that live in a Tundra destroy most vegetation.

• Flooding occurs too often in a Tundra for large trees to grow.

• The soil in a Tundra is too nutrient-poor for large trees to grow.

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NGSS.MS-LS1-5

This chart gives the physical properties of Copper. How does the density of a 4-g sample of copper compare to that of a 12-g sample of copper?

• Its density is one-half the density of the 12-g sample.

• Its density is the same density as the 12-g sample.

• Its density is twice the density of the 12-g sample.

• Its density is three times the density of the 12-g sample.

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NGSS.MS-PS1-2

This illustration shows the reaction of a plant when placed near a light source. What would happen to the plant if it were turned away from the light source?

• The plant would stop growing.

• The plant would be unaffected.

• The plant would move away from the light source.

• THe plant would bend towards the light source.

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NGSS.MS-LS1-5

Tulips are flowers that typically bloom in the spring. How could tulips be forced to bloom in winter?

• by limiting pruning and trimming of the tulips

• by reducing water levels and nutrient uptake by the tulips

• by elevating oxygen levels and supplying organic matter to the tulips

• by increasing temperature and lengthening daylight for the tulips

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NGSS.MS-ETS1-1

Which is true for every atom of an element?

• It can be seen with a magnifying glass.

• It is joined together with another atom.

• It has mass and volume.

• It is weightless.