Physical Science Energy

Plants use the sunlight to make their own food. Therefore, plants are

• Producers, which produce energy for the rest of the ecosystem

• Consumers, consuming other living things in an ecosystem

• predators, top of the food chain

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Which organisms make energy available to all other organisms in a food chain?

• consumers

• decomposers

• producers

Wind is increasingly being used as a source of energy. A wind turbine is shown below. What type of energy transformation is the wind turbine designed to do?

• electrical to chemical

• kinetic to electrical

• heat to electrical

• heat to mechanical

Tags

NGSS.MS-PS3-5

A student was studying chemical reactions. He followed these steps in an investigation:Label one test tube X and another similar test tube Y.Fill each test tube with 25 mL of the same acid solution.Add 25 mL of the same salt solution to each test tube.Carefully place test tube X in a beaker of water on a hot plate and increase the temperature.Place test tube Y in a test tube holder on the table.Record observations.The student observed that a color change in test tube X occured faster than in test tube Y. Why did this happen?

• Raising the temperature increased the number of particles in the test tube.

• When the temperature was raised, the particles collided faster.

• Raising the temperature increased the air pressure around the test tube.

• When the temperature was raised, the particles became lighter.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Which is most likely a major concern associated with burning fossil fuels?

• Burning fossil fuels can pollute the oceans.

• Burning fossil fuels can remove harmful chemicals from precipitation.

• Burning fossil fuels can remove carbon dioxide from the atmosphere.

• Burning fossil fuels can produce smog, which can cause respiratory illnesses.

Tags

NGSS.MS-ESS3-4

NGSS.MS-ESS3-5

Do waves transfer ENERGY or MATTER?

• Energy

• Matter

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

How can you remove energy from matter?

• By increasing its volume

• By lowering its temperature

• By increasing its pressure

• By boiling it

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Using the propeller, a person can wind up the rubber band so that it is wound and tight. Upon release of the propeller, the rubber band quickly unwinds causing the propeller to spin and aid the toy plane in flight. Which statement best describes what energy transformation occurs upon release of the toy airplane's propeller?

• Potential energy is being transformed into kinetic energy.

• Kinetic energy is being transformed into potential energy.

• Thermal energy is being transformed into mechanical energy.

• Mechanical energy is being transformed into chemical energy.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

The image is of a heating can. When the activating button is pushed, water mixes with calcium oxide. This produces calcium hydroxide in a chemical reaction which gives off heat. The heat warms up the food. What happens when this reaction occurs in the closed can?

• The mass of the can and its contents increases.

• The mass of only the food in the can decreases.

• The mass of the can and its contents remains the same.

• The mass of the can and its contents decreases.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The Sun emits light. Which statement correctly describes sunlight?

• It has only visible light.

• It has only visible and ultraviolet light.

• It has visible, infrared, and ultraviolet light.

• It has only visible and infrared light.