Science Test Prep

Which of the following would produce a physical change?

• Cooking a hotdog on a grill.

• Boiling a hotdog in water.

• Cutting a hotdog in half and placing it on a bun.

• Placing a hotdog in a container of a strong acid.

___ is the waste of plants used by animals, while ___ is the waste of animals used by plants.

• Oxygen, Carbon Dioxide

• Carbon Dioxide, Animals

• Nitrogen, Carbon Dioxide

• Water, Nitrogen

Tags

NGSS.MS-LS2-3

Use the scenario to answer the next two questions Making solutions Solutions are mixtures that are very common in our daily lives. A solution is composed of a solute and a solvent. A student conducted an investigation using 50 milliliter of distilled water and 5 grams of table salt. The water for each test was brought to a certain temperature before the salt was added. The data from the investigation are shown in the graph. Which conclusion best describes the data in the graph?

• Increasing the amount of solvent increases the temperature of a solution

• Increasing the temperature of the solute increases the amount of the solution

• the amount of solute in a solution determines the time needed for the solute to dissolve in the solvent

• A decrease in the temperature of a solvent increases the time needed for a solute to dissolve in a solvent

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A student needs to separate a mixture compsed of iron fillings and sand. How can the student most easily separate all the iron fillings from the mixture?

• Use a magnet to attract the iron filings

• Use filter paper to isolate the iron filings

• Add water to the mixture and pour off the floating iron filings.

• Add water to the mixture and allow it to evaporate and leave behind the iron filings

Which statement identifies the most likely outcome if the rabbit population suddenly reduced?

• Owls would become extinct because they have no food

• Hawks would have less food available so their population would decrease

• Grasshoppers would have less food available so their population would decrease

• Grasses in the area would die and all of the animals would have to move to another area to survive

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Which statement best explains the change that occurs when wood is burned?

• This is physical change because the products can be changed back into wood

• This is physical change because the products are different from the starting materials

• This is chemical change because the products can be changed back into wood

• This is chemical change because the products are different from the starting materials

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which statement accurately describes the vegetation or animals that would be best supported by the ecosystem?

• the desert would support animals that need to remain cool

• the pond would support animals that can survive in saltwater environment

• the tropical rainforest would support plants that are tall and have then needles

• the polar tundra would support plants that are small and grow close to the ground

Tags

NGSS.MS-LS2-1

Which is the correct order of the food chain of the channel catfish?

• A,B,C,D

• B,C,D,A

• C,D,A,B

• D,B,A,C

Tags

NGSS.MS-LS2-3

The model shows a process that occurs in a tomato plant

A process Occurring in a Tomato Plant

Which labels correctly complete the model to help describe this process?

• 1.water 2. sunlight 3. stored energy

• 1.sunlight 2.stored energy 3.water

• 1.sunlight 2. water 3.stored energy

• 1.stored energy 2.water e.sunlight

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which statement best describes an effect of humans on this food web?

• the population of bald eagles may be reduced by humans consuming too many smelt.

• Competition among humans, alewife, and smelt decreases food availability for bald eagles

• Humans decrease the populations of phytoplankton and zooplankton by consuming chinook salmon

• Human consumption of coho salmon and chinook salmon may reduce food sources for herring gulls

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4