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Delta Modern Language School
Grade 4
Date ......./......./………

Q. (4) – Write the scientific term for each of the following:

1- The Primary source of energy on Earth                      (………………..)

2-A turbine used to generate electricity from wind movement   (………………..)

3-The energy used to produce electrical energy in watermills  (………………..)

 Q. (5) – Give reason for:

1-Wind is considered as a source of electricity.
………………………………………………………………………………………….....

2-We can use solar energy in cooking food.
…………………………………………………………………………………………….

3-Greenhouses are very important for farmers.
…………………………………………………………………………………….……...

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