Ariana uses balloons to investigate static electricity. Which of the following best explains what will happen when she brings two positively charged balloons close to each other?

• The balloons will move apart.

• One balloon will lose its charge.

• The balloons will come together.

• One balloon will gain a negative charge.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The stem is an important part of many plants. Which of the following is most similar to the role performed by the stem of a plant?

• an anchor holding a boat in place

• a snack company producing energy bars

• a colorful sign attracting people into a store

• an elevator transporting supplies from one floor to another

Roger collected four rock samples and wrote a description of how each was formed. Which of the following rocks that Roger collected is a metamorphic rock?

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Mr. Washington mixed iron filings with sand. Then, he asked his students to separate the iron filings from the sand. Which of the following is the best tool to use to separate the iron filings from the sand?

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Jenny measures the outside temperature as 16 degrees Celsius (°C), 61 degrees Fahrenheit (°F). She observes precipitation falling from the clouds in a solid form. What type of precipitation is Jenny most likely observing?

• hail

• rain

• sleet

• snow

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

Plants are classified according to their structures. The plant pictured below reproduces without seeds and has simple tubes for transporting water.

In which group of plants would this plant be classified?

• spore-producing plants with many leaves

• plants that produce fruit on their leaves

• plants that carry seeds on their leaves

• flowering plants with many leaves

Erosion and weathering can both cause changes to the surface of Earth. Which of the following happens only because of erosion and NOT because of weathering?

• Rocks form deep underground.

• Rocks become smooth and round.

• Rocks are broken apart into small pieces.

• Rocks are moved from one place to another.

Astronomers study many different kinds of objects in our Solar System. Which of the following best describes a difference between comets and asteroids?

• Comets orbit planets, and most asteroids orbit the Sun.

• Comets are hot balls of gas, and asteroids are made mostly of ice.

• Comets are made mostly of ice, and asteroids are made mostly of rocks.

• Comets orbit the Sun between Mars and Jupiter, and asteroids form patterns in the sky.

The organisms shown below live in or near bodies of water. Some are classified as vertebrates and some as invertebrates.

Which organism is classified as an invertebrate?

• crab

• fish

• manatee

• turtle

A radiometer is a device with fins that spin when light energy strikes them. A picture of a radiometer is shown below. As part of an experiment, a light source was placed 50 centimeters (cm) from a radiometer. The light source gave off four different-colored lights for 30 seconds (s) each. After each color of light was turned off, the amount of time the fins on the radiometer spun was recorded. The results are shown in the table below.

Which color of light provided the greatest amount of light energy according to the data in the table?

• red

• green

• blue

• white