NSCAS

Which of the following represents the process of photosynthesis?

• C₆H₁₂O₆ + 6O₂ --> 6CO₂ + 6H₂O

• 6CO₂ + 6H₂O --> C₆H₁₂O₆ + 6O₂

• 2H₂O --> 2H₂ + O₂

• 2H₂ + O₂ --> 2H₂O

Tags

NGSS.MS-LS1-6

Jayson heated two beakers. Each beaker held 100 mL of water. The water began to boil. Then Jayson loosely wrapped one of the beakers in five layers of aluminum foil. He left the second beaker unwrapped. He measured the temperatures of the water in the beakers over time and recorded his data in the table. Which statement BEST explains Jayson’s observations?

• Aluminum foil is a good conductor of thermal energy.

• The layers of aluminum foil absorbed heat instead of transferring it.

• Layers of air between the foil wrappings reduced the transfer of heat.

• The warmer atmosphere around the foil-wrapped beaker prevented the transfer of thermal energy.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The diagram shows a swinging pendulum. Five different positions of the pendulum are labeled. Each position contains different amounts of potential and kinetic energy.

The diagram shows a swinging pendulum. Five different positions of the pendulum are labeled. Each position contains different amounts of potential and kinetic energy. Which graphs represents the energy within this system?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-4

NGSS.MS-PS3-5

The graph shows water table levels in an aquifer changing over a period of time.

Which MOST likely caused the changes observed in the data over time?

• increase in the amount of precipitation

• increase in water conservation efforts

• decrease in the amount of recharge

• decrease in irrigation for farming

Tags

NGSS.MS-ESS3-1

NGSS.MS-ESS3-4

What is one benefit to the company of placing the well where they did instead of making the well shallower?

• Drought should have less of an effect on the amount of water produced by the well.

• Confining beds will prevent more water from entering the aquifer near the well.

• Water in the aquifer where the well is located will recharge more quickly.

• A deeper well will be much less expensive to drill than a shallower well.

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

Which statement BEST describes the change to an ice cube as it melts?

• The change is physical because the mass remains the same.

• The change is physical because the substance remains the same.

• The change is chemical because water has a different pH than ice.

• The change is chemical because ice has a lower density than water.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

An ocean food chain is shown.

Which organism gets its energy directly from the Sun?

• phytoplankton

• krill

• fish

• sea lions

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Aquatic macroinvertebrates have different sensitivities to pollution. This characteristic makes them useful for predicting the quality and safety of a drinking water source. The following table shows how macroinvertebrates are grouped, according to pollution sensitivity.

Finding an excess of which of the following macroinvertebrates in a body of water would indicate that the body of water is polluted?

• dobsonflies, gilled snails, and stoneflies

• backswimmers, leeches, and water bugs

• scuds, sow bugs, and true bugs

• black flies, clams, and crayfish

What part of this process is being demonstrated in this diagram?

• Heat causes gases to expand.

• Heat causes gases to contract.

• As air cools, currents flow clockwise.

• As air cools, currents flow counterclockwise.

Tags

NGSS.MS-PS1-4

Which process is missing from the water cycle diagram?

• pressure

• moisture

• absorption

• condensation

Tags

NGSS.MS-ESS2-4