Which model best explains where the rabbit gets the energy it needs?

• Rabbit → Plants → Sun

• Sun → Plants → Rabbit

• Plants → Sun → Rabbit

• Sun → Rabbit → Plants

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A group of students notice that the trash cans at their school are filled with items that could be recycled instead of thrown into the trash. The students ask the school to put color-coded recycling bins around the school. The diagram shows the three types of recycling bins that the students want to use. This question has two parts. Be sure to answer both parts of the question.

Part A: The students wonder what would happen if the entire city started to use recycling bins to recycle items. Which statement describes a way the city could change if people used recycling bins?

PAY ATTENTION TO THE QUESTION!!

Does it say anything about water? NO!

Does it say anything about electricity? NO!!

Does it say anything about driving?? NO!!

What is left?

• A. Farms would use less water.

• B. Homes would use less electricity.

• C. Landfills would receive less trash.

• D. People would drive cars less often.

Tags

NGSS.MS-ETS1-3

Which statement describes how Earth’s resources are affected when people recycle more glass, paper, and plastic items?

PAY ATTENTION TO THE QUESTION!!

When we recycle paper, we don't have to cut down more trees.

When we recycle glass, we aren't digging for more natural resources underground.

When we recycle plastic, we are not using more chemicals to create something that will hurt the environment.

Overall, by recycling more, FEWER RESOURCES ARE USED TO PRODUCE......

• Fewer resources are used to produce new items.

• Fewer resources are needed to produce recycling bins.

• Fewer resources are available for people to use in natural areas.

• Fewer resources are available to make other items for people to use.

Tags

NGSS.MS-ESS3-4

3. A class is learning about the effects of volcanic eruptions. In their textbook, they see a picture of a volcano in Central America. What are some effects of volcanic eruptions?

• Lava flow and ash clouds

• Snowfall and rainbows

• Earthquakes and tsunamis

• Hurricanes and tornadoes

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS3-2

The class decides to make a model of an erupting volcano which represents the geosphere. How would an erupting volcano affect other Earth spheres?

• It would only affect the geosphere.

• It would affect the atmosphere by releasing gases and ash.

• It would have no effect on the biosphere.

• It would only affect the hydrosphere.

Tags

NGSS.MS-ESS3-2

NGSS.MS-LS2-4

A teacher presents a science class with four unknown solid substances. The teacher wants the students to do an investigation to identify the substances.

Students will observe the properties of each substance and then compare them to the properties of known substances.

The students follow this procedure:

1. Use a hand lens (magnifying glass) to look at each sample. Record color.

2. Move a magnet close to each sample. Record observations.

3. Place 1 gram of each sample in a beaker filled with water. Record observations.

4. Place 1 gram of each sample in a beaker filled with vinegar, which is a weak acid. Record observations.

The results of the investigation are shown in the data table.

TYPE YOUR NAME IN THE RESPONSE BOX AFTER YOU HAVE READ THE QUESTION AND LOOKED AT THE TABLE CLOSELY.

Tags

NGSS.MS-PS1-2

Next, the students compare the observations of unknown substances to a data table of properties of common substances.

The teacher tells the students that each unknown substance can be identified using this information as a reference.

TYPE YOUR NAME IN THE RESPONSE BOX AFTER YOU HAVE READ THE QUESTION AND LOOKED AT THE TABLE CLOSELY.

Tags

NGSS.MS-PS1-2

Which statement best explains why the results of the investigation can be used to identify the unknown substances?

Pay attention to the tables.

Are all of the substances the same or different (unique)?

• All liquid substances have exactly the same set of properties.

• All solid substances have completely different sets of properties.

• Every substance has properties that change depending on the amount of the substance.

• Every substance has a unique set of properties that does not depend on the amount of the substance.

Tags

NGSS.MS-PS1-2

Which statement explains why it is important to test an unknown substance several times?

Ask yourself: Why do we want to perform any scientific investigation?

• A. To make sure the results are different each time.

• B. To make sure the results are the same each time

• . C. To make sure the amount of the substance does not change the results.

• D. To make sure the temperature of the substance does not change the results.

Tags

NGSS.3-5-ETS1-3

Which statement describes evidence of a new substance forming during the investigation?

Ask yourself: If I am LOOKING at these substances, how could I tell there is a reaction or a change happening?

You will have enough time to watch the video and then answer the question.

https://youtu.be/37pir0ej_SE?si=ZIDKhGR7m2utTM74

• A. Unknown substance 2 was attracted to a magnet.

• B. Unknown substance 3 floats when mixed with water.

• .C. Unknown substances 1 and 4 dissolved when mixed with water.

• D. Unknown substances 1 and 2 formed bubbles when mixed with acid.

Tags

NGSS.MS-PS1-2