DE_LE_2.1.1

DE_LE_2.1.1_What Is Energy and How Does It Contribute to Maintaining Life on Earth?

By NickBeth Meyer

​​Movement

​​Changes i.e. physical or chemical

​​Growth

​Energy: The ability to do work

• gasoline

• batteries

​​Chemical E.

• moves objects

• i.e. walking, waterfalls, wind turbines

​​Mechanical E.

• a stove or match

​​Heat E.

• movement of charged particles

​​Electrical E.

​​Work=force x distance

​​1 joule (J) = 1 Newton(N) x meter (m)

​​Newton(N) is the force needed to move 1 kg over 1 meter/second

​​Watt=the use of 1J/second

​Measuring Energy

​​calorie (cal)=energy needed to raise 1 g of water 1 degree C

​​Calorie (C) = 1000 cal = 1 kcal

​​erg=the KE of 2 g moving 1 cm/s

​​Units:
1 cal=4.184 J
1 J=0.239 cal
1 erg = 10^-7 J

​Energy Units

Drag and Drop

All living organisms require

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to perform​

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. ​

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from the sun is converted to​

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by photosynthetic organisms.

Drag these tiles and drop them in the correct blank above

energy

work

Solar energy

chemical energy

Fill in the Blanks

The ability to do work or cause change is defined as

Match

Match the following energy terms

• newton x meter (one newton of force to move an object one meter)

• J/second (the use of 1 joule per second)

• energy required to raise 1 g of water by 1 degree celcius

• food calories (1000 calories = kcal)

joule (J)

watt

calorie (cal)

Calorie (C)

• joule (J)

• watt

• calorie (cal)

• Calorie (C)