STAAR Review 6.8A & 6.8B Energy

Which statement BEST describes the kinetic and potential energies of the cart at Location X compared with the kinetic and potential energies of the cart at Location Y?

• The cart has more potential energy and less kinetic energy at Location X than it has at Location Y.

• The cart has less potential energy and more kinetic energy at Location X than it has at Location Y.

• The cart has the same amount of potential energy and kinetic energy at Location X as it has as Location Y.

• The cart has more potential energy and kinetic energy at Location X than it has at Location Y.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which table best compares the amounts of potential energy and kinetic energy of the snowboarder at each position.

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• 
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Tags

NGSS.MS-PS3-2

Which statements accurately describe the potential and kinetic energy of this bicyclist?

• Kinetic energy increases.

  Potential energy decreases.

• Kinetic energy increases. Potential energy remains the constant.

• Kinetic energy remains constant.

  Potential energy decreases.

• Kinetic energy remains constant.

  Potential energy increases.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A group of students was conducting an investigation with plants. One group of plants was placed inside a closet. The other group of plants was placed next to a window. After two weeks, the plants next to the window were taller and healthier than the plants in the closet.

Which statement BEST explains the difference in plant growth?

• The plants next to the window were able to convert more thermal energy into light energy.

• The plants next to the window were able to convert more light energy into chemical energy.

• The plants next to the window were able to convert more thermal energy into mechanical energy.

• The plants next to the window were able to convert more light energy into electrical energy.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

NGSS.MS-LS2-1

Which action represents a conversion of chemical energy into mechanical energy?

• Pancakes reheated in a microwave oven

• Soup beginning to boil on a stove

• A grasshopper jumping from a predator

• Sunlight melting an icicle.

Students build a circuit. The circuit has wires that connect a battery to a switch and a fan.

Which energy transformations happen when the students close the circuit and the blades of the fan begin to spin?

• Chemical to mechanical to electrical

• Electrical to chemical to mechanical

• Chemical to electrical to mechanical

• Mechanical to electrical to chemical