D

A student added a scoop of sugar to a cup of water. Then she stirred the sugar and water for one minute. The drawing shows what the student observed in the cup before and after stirring. Which statement BEST illustrates what happened to the sugar after stirring?

• The sugar particles evaporated and left only water in the cup.

• The sugar particles turned into water particles and disappeared.

• The sugar particles spread out in the water and were too small to be seen.

• The sugar particles melted into a clear liquid and looked the same as the water.

Tags

NGSS.MS-PS1-2

Ethan uses a rain barrel to collect water from the roof of his house as shown in this model. When it rains, water runs off of the roof into the barrel. The water is stored in the barrel until Ethan is ready to use it. Ethan wants to use water from the barrel as drinking water for his pets, but he is worried that the water is not clean. He thinks a tool called a Solar Still will help solve his problem. How do the water drops attached to the glass cover of the Solar Still get there? The sun heats the ​ (a)   water inside of the solar still. The heat causes the water particles that are ​ ​ (b)   to be seen to change from ​ (c)   . The particles rise up and hit the glass cover, where they change back into a ​ (d)  

• dirty

• clean

• too small

• too big

• a liquid to a gas

• a gas to a liquid

• a solid to a gas

• clean liquid

• liquid

• dirty water

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

The picture shows three states of matter labeled X, Y, and Z. Match each statement to the correct matter particle image?

• Y

• becomes the shape of the container it is put into

• X

• particles far apart and too small to see

• X

• has a defined shape

• Y

• is a solid

• Z

• Air particles move very quickly

Tags

NGSS.MS-PS1-4

James blows up a balloon as a demonstration in class. Which sentence explains what he is trying to model for his class?

• Air has no weight, which will cause the balloon to float.

• Air is made of very large particles that are invisible.

• Air is not made of matter and will have no effect on the balloon.

• Air is made of particles that are very small and cannot be seen.

Tags

NGSS.5-PS1-1

Sanjay sees a balloon experiment that uses air, liquid nitrogen, and balloons to model how these interact. He makes this labeled drawing to show the beginning, middle, and end of the experiment. Then Sanjay makes a chart to explain what happened to the air that is too small to be seen.

Identify the objects that have slow moving, small particles of air inside them.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Why is electrical wiring usually covered with a layer of plastic?

• To make it look pretty

• To make it safe

• To help electricity flow along the wire

• To add more energy

A student builds a circuit made up of a battery, two light bulbs, and a switch. What will the student most likely observe in this circuit?

• Light bulb 1 and light bulb 2 will both be on

• Light bulb 1 and light bulb 2 will both be off

• Light bulb 1 will be off, but light bulb 2 will be on

• Light bulb 1 will be on, but light bulb 2 will be off

Tags

NGSS.MS-ETS1-1

Students constructed a circuit using different-colored lightbulbs. What will happen if Switch 3 is closed and the other switches are left open?

• Only the white bulb will operate

• Only the white and yellow bulbs will operate

• None of the bulbs will operate

• Only the red and blue bulbs will operate

Tags

NGSS.3-PS2-3

NGSS.4-PS3-2

The picture shows a series circuit with three lit bulbs. How many of the bulbs will remain lit if the wire is cut at the point shown by the arrow?

• 0

• 2

• 1

• 3

A student designs an experiment to test the force of a spring using a spring launcher and four spheres with the same diameter but with different masses. What question is being asked in this investigation?

• How does the mass of the ball affect the force needed?

• How does the color of the ball affect the force needed?

• How does the diameter of the ball affect the force needed?

• How does the height of launch affect the mass?

Tags

NGSS.MS-PS2-2