SCIENCE 8 STAAR REVIEW PART 1

Immediately after a forest fire, the primary consumers in the area will compete most for which biotic factor?

• Food

• Space

• Oxygen

• Sunlight

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NGSS.MS-LS2-1

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A student pushes a 51.5 kilogram bookshelf across a smooth floor with a net force of 67 N. What is the approximate acceleration of the bookshelf?

• 1.3 m/s2

• 3,450.5 m/s2

• 15.5 m/s2

• 0.77 m/s2

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NGSS.MS-PS2-2

Which pair of elements are nonmetals and gases at room temperature and normal atmospheric pressure?

• Fluorine, F, and chlorine, Cl

• Boron, B, and aluminum, Al

• Hydrogen, H, and cesium, Cs

• Cobalt, Co, and nickel, Ni

A farmer digs a small pond in a pasture. The farmer adds young individuals from two species of algae-eating fish to the pond and plants some reeds around the edges of the pond. The farmer wants the pond to be a sustainable ecosystem.

Which of the following would be most helpful in increasing the pond ecosystem’s sustainability?

• Decreasing the number of plant species around the edges of the pond

• Introducing older fish of the same species into the population of algae-eating fish

• Having a greater diversity of living organisms in the pond

• Adding gravel between the water and where the reeds are planted

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NGSS.MS-LS2-2

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How many neutrons are in the nucleus of a potassium atom with a mass number of 39?

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NGSS.MS-PS1-1

Ocean currents affect weather patterns by —

• regulating when tides occur in coastal areas

• trapping heat at the equator to regulate the global climate

• distributing heat from the uneven absorption of solar energy

• increasing the rate of evaporation to transport water to areas experiencing droughts

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NGSS.MS-ESS2-6

• allows water to enter and exit the cell

• contains genetic information

• stores water and nutrients

• produces its own food

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NGSS.MS-LS1-1

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• Because of friction, the ball continues rolling forward at the same speed.

• Because of friction, the ball rolls forward at an increased speed.

• Because of inertia, the ball continues rolling forward at the same speed.

• Because of inertia, the ball rolls forward at an increased speed.

• There is a change in shape.

• There is a change in volume.

• The two liquids mix into a solution.

• The two liquids form a new substance.

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NGSS.MS-PS1-2

• It is August in the Northern Hemisphere. It is April in the Southern Hemisphere.

• It is summer in the Northern Hemisphere. It is winter in the Southern Hemisphere.

• The number of hours of daylight is greater in the Southern Hemisphere than in the Northern Hemisphere.

• Spring begins earlier in the year in the Southern Hemisphere than it does in the Northern Hemisphere.

Tags

NGSS.MS-ESS1-1