STAAR REVIEW Part 2

How are the convection currents in the student’s model different from the convection currents in Earth’s atmosphere and oceans?

• A. The warm air in Earth’s atmosphere and the warm water in Earth’s oceans sink instead of rise.

• B. The heat source for Earth’s atmosphere and oceans is the sun, which heats from above instead of below.

• C. Convection cells in Earth’s atmosphere and oceans flow in the same direction instead of opposite directions

• D. Cold air in Earth’s atmosphere and cold water in Earth’s oceans are less dense than warm air and warm water instead of being more dense

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NGSS.MS-ESS2-6

Based on the life-cycle information, which statement best describes the relationship between the nest fly larvae and the young birds?

• F. The larvae are prey for the young birds.

• G. The larvae are predators of the young birds.

• H. The young birds are hosts for the larvae.

• J. The young birds are consumers of the larvae.

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• A

• B

• C

• D

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• F

• G

• H

• J

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27. A mid-ocean ridge is located at the boundary of two tectonic plates. Which diagram correctly models the relative plate motion on each side of a mid-ocean ridge?

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NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

Assuming the students did not make any careless errors, what likely explains these changes in mass?

• F. Procedure 1: All the reactants were liquids that evaporated. Procedure 2: A gas was formed as one product, and it escaped into the air.

• G. Procedure 1: One of the reactants was converted to thermal energy. Procedure 2: All the products were liquids.

• H. Procedure 1: The reactants were liquids with different densities. Procedure 2: The reactants were combined into only one product.

• J. Procedure 1: One of the products was a gas that escaped into the air. Procedure 2: A gas from the air reacted with one of the other reactants.

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29. What is the most likely explanation for the body-size distribution of house sparrows shown on the map?

• A. Cold temperatures in the North favored the survival of populations of larger sparrows over populations of smaller sparrows.

• B. High elevations in the West provided a survival advantage for populations of larger sparrows over populations of smaller sparrows.

• C. Warm temperatures in the South allowed populations of larger sparrows to survive over populations of smaller sparrows.

• D. Coastal environments in the East tended to give a survival advantage to populations of larger sparrows over populations of smaller sparrows.

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NGSS.MS-LS1-5

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Which picture shows how the moon appears from Earth when it is in the position shown in this model?

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NGSS.MS-ESS1-1

31. Four students were asked to complete a table for a science assignment. Each student selected one chemical element from each of four groups in the periodic table and then classified each element as a metal, a nonmetal, or a metalloid.

Which table was completed correctly?

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What is the block’s average speed to the nearest hundredth of a m/s?

Be sure to use the correct place value.

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