Energy Conversion 2

Which one of the following correctly shows the energy conversion of a rabbit eating a carrot and leaping away?

• 1. Light energy -> Kinetic energy

• 1. Chemical energy -> Heat energy

• 1. Chemical energy -> Kinetic energy

• Kinetic energy -> Chemical energy

Tags

NGSS.MS-PS3-5

1. Which of the following systems require(s) sound energy in order to communicate?

1. A. The public warning system

2. B. The lighthouse on top of the hill

3. C. The siren from the fire engine

• A only

• C only

• 1. A and C only

• B and C only

In which group would you put the toaster?

• Group A

• Group B

• Group C

• Group D

1. It is said that energy cannot be created or destroyed. However, it can be changed from one form to another. In this case, how does the deer obtain its energy indirectly from the sun?

• 1. The deer gets the energy by feeding on other herbivores.

• 1. The deer gets the energy by spending a few hours under the sun.

• 1. The deer gets the energy by feeding on the plants which have converted the light energy into chemical potential energy.

• The deer gets the energy by feeding on the plants which have converted the heat energy into chemical potential energy.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

1. Which of the following items have potential energy?

• B and C only

• A, B and C only

• 1. B, C and D only

• A, B, C and D

Tags

NGSS.MS-PS3-2

1. Two balls, S and T, were each hung by a string from a ceiling. When ball S was released from position X, it hit ball T which moved to position Y. Which of the following are true?

   
   

   1. A. Some energy in ball S was transferred to ball T when ball S hit ball T.

   2. B. The amount of kinetic energy in ball T increased as it moved towards position Y.

   3. C. The amount of gravitational potential energy in ball S decreased as it was released from position X.

• 1. A and B only

• 1. A and C only

• 1. B and C only

• A, B and C

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

1. Which of the following sources of energy allows him to use the racket to hit the ball?

• Ball

• Wind

• Food

• Water

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which statement explains why taking public transport instead of driving saves energy?

• 1. Fewer cars on the road helps to reduce the consumption of fossil fuels.

• 1. More cars on the road increases the rate of depletion of fossil fuels.

• 1. Fewer cars on the road produces less air pollutants.

• 1. Fewer cars on the road prevents traffic jam.

1. How can we reduce the rate of energy consumption while driving at night?

• 1. By switching off headlights

  
  

• 1. By not speeding unnecessarily

• 1. By keeping away from the bus lane

• 1. By keeping a distance from the car in front

Tags

NGSS.MS-ETS1-2

Which of the following explains why not all of the energy stored inside the fuel is converted into kinetic energy?

• 1. Some fuel has been evaporated off.

• 1. Some energy has been lost as heat.

• 1. The wrong fuel has been used.

• 1. Carbon dioxide is released

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5