STAAR Review #3

Students jump rope for one minute to determine changes in heart rate and breathing rate. Their data are shown below in the table. Which table explains the functions of the two body systems that the students investigated?

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The diagram shows how a cylinder in a car engine causes the car to move. Fill in the blank to describe the energy transformations occuring.

The ​ (a)   in the fuel is converted to ​ (b)   by the ignition of the spark plug. The hot expanding gases then push the piston down, which turns the crank shaft, producing ​ (c)   .

• chemical energy
• thermal energy
• mechanical energy

The model shows Earth in four different positions in its orbit around the Sun. Which statement correctly explains which position of Earth represents summer in the United States?

• Position 1, because the Western Hemisphere is facing the Sun.

• Position 2, because the Northern Hemisphere tilts toward the Sun.

• Position 3, because Earth is at its closest point to the Sun in its orbit.

• Position 4, because Earth is traveling at its fastest rate in its orbit.

Students observe an unknown species during a field study. They observe that the organism is multicellular, is autotrophic, and can reproduce both sexually and asexually. Which kingdom does this organism most likely belong to?

• Archae

• Animalia

• Bacteria

• Plantae

A car initially traveling at 8.0 meters per second doubles its speed while traveling in a northeast direction. Students used a table to record the initial and final conditions for speed and velocity. Which table is correct? (8.6A)

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Which element has chemical properties that are most similar to the chemical properties of Sulfur, S?

(8.5C)

• Silicon, Si

• Chlorine, Cl

• Selenium, Se

• Phosphorus, P

Early one morning a student observed the Moon as it appeared from Earth. Which diagram shows the correct orientation of the Moon with the Sun and the Earth in its observed phase?

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Humans depend upon food that comes from the ocean. Some human activities negatively impact food supplies. Which statement provides the best evidence that human activities contribute to this impact?

• human visitors to coral reef systems break corals growing on rocks

• humans catch marine fish at a faster rate than fish are able to reproduce

• humans raise fish in a hatchery for commercial sale

• humans construct artificial reefs to attract tourists