WALA: MEASURING LIGHT INTENSITY

WALA: MEASURING LIGHT INTENSITY

L.O: to know that light intensity can be measured.

INTRODUCTION

• What is light intensity?

• Light intensity is the amount of light in an area.

• How is light intensity measured?

• Using a light meter.

• Why is there better light on some nights?

• Light intensity is good when there is a full moon and no clouds to hide the moon

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CLASS DISCUSSION

Do the following need to know about light intensity. Give your reasons.

a). Film makers

b). Commercial green house.

c). Cricket match.

Film makers

They must make sure the light intensity is exactly right for filming.

Commercial Green House.

Many flowers and vegetables are grown in commercial green houses. Inside a green house the temperature , amount of moisture and the light intensity are controlled.

Cricket Match

Test match cricket has to be played in daylight. When the light intensity falls to a certain level the days play comes to an end.

Conclusion

Science Activity book page 44.