Energy (7th Grade Science)

The ability to do work is called

• velocity

• energy

• conversion

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Energy is measured in units called

• joules.

• pounds.

• meters.

The energy associated with motion is called

• • kinetic energy.

• gravitational potential energy.

• nuclear energy.

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Kinetic energy increases as

• • mass increases and velocity decreases.     

• • mass decreases and velocity increases.       

     

• both mass and velocity increase.  

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The total potential and kinetic energy of the particles in an object is called

• thermal energy.

• chemical energy.

• electrical energy.

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An example of something that stores chemical energy is

• • lightning.

• a match.

• light.

Moving water can be used to produce electricity because

• most forms of energy can be converted into other forms.

• energy cannot be converted into other forms of energy.   

• kinetic energy can be converted into potential energy, but not vice versa.

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What type of conversion is taking place when natural gas is used to heat water?

• chemical energy into thermal energy

• thermal energy into mechanical energy   

• electromagnetic energy into chemical energy

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When you rub your hands together on a cold day, you use friction to convert

• mechanical energy into thermal energy.

• nuclear energy into electrical energy. 

• electrical energy into electromagnetic energy.

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The scientist who suggested that energy can be created under certain conditions was

• Newton

• Einstein

• Pascal

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