RC 2 Part 2

A student uses paper and fasteners to create a model of Earth, the sun, and the moon. The sun and Earth are attached to the paper background, while the moon is free to revolve around Earth.

Which diagram shows the objects arranged so that a new moon would be visible from Earth?

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Tags

NGSS.MS-ESS1-1

Some students used records from the U.S. Naval Observatory to make the table of the percent of the moon that was visible on each night in January 2011.

Based on these data, what part of the lunar cycle occurred between January 5 and January 7?

• Waxing crescent moon

• Waning crescent moon

• Full moon

• New moon

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NGSS.MS-ESS1-1

The diagram below shows four phases of the moon as it revolves around Earth.

A student builds a model based on this diagram. The student uses foam balls to represent the moon and Earth and a flashlight to represent the sun. The student should shine the flashlight on the model of Earth from Position --

• 1

• 2

• 3

• 4

Tags

NGSS.MS-ESS1-1

Wha type of tide would this arrangement of earth-moon-sun create?

• full moon tide

• new moon tide

• neap tide

• spring tide

Tags

NGSS.MS-ESS1-1

What type of tides would this arrangement of earth-moon-sun create?

• neap tide

• spring tide

• new moon tide

• full moon tide

Tags

NGSS.MS-ESS1-1

A scientist spilled a few drops of dilute hydrochloric acid (HCl) on a lab table. For safety purposes, the scientist sprinkled some baking soda (NaHCO3) onto the spill. Which observation would provide the best evidence that a chemical reaction occurred?

• The baking soda and hydrochloric acid combined, and bubbles formed.

• The baking soda absorbed the hydrochloric acid.

• Some of the baking soda dissolved in the hydrochloric acid.

• The hydrochloric acid evaporated, leaving only the baking soda.

Tags

NGSS.MS-PS1-2

The student observed that the temperature changed from 25°C to 23°C when the solutions were combined and that a white substance rapidly formed and settled to the bottom of the container. What most likely happened to produce these results?

• One of the original compounds came out of solution.

• The solutions reacted chemically.

• Some of the water froze into ice crystals.

• Rapid evaporation of water occurred, leaving a solid.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The student inferred that a chemical reaction occurred. What evidence supports this

inference?

• A dark solid formed on the zinc metal.

• The zinc metal remained silver-colored and shiny.

• The CuSO solution turned blue when the zinc metal was added.

• None of these

Tags

NGSS.MS-PS1-2

Which statement is not supported by the student’s observations?

• A chemical reaction takes place between magnesium and hydrochloric acid.

• A gas is released in Test Tube 2.

• The substances in both test tubes are reactive only at high temperatures.

• Energy is released in the reaction involving hydrochloric acid.

Tags

NGSS.MS-PS1-2

Based on their observations, can the students correctly conclude that a chemical reaction occurred?

• No, because the metal strip was still visible

• Yes, because a new material of a different color formed on part of the metal strip

• No, because the solution stayed blue

• Yes, because the volume of the blue solution stayed the same

Tags

NGSS.MS-PS1-2