Effects of Light Science - Effects of Light

As seen from the earth, when a planet or star passes behind the moon, that state is called a ………….. .

The day on which the sun reaches exactly overhead is called the …………… .

A lunar eclipse is seen only on a ………….. night.

During lunar eclipse ……………. comes between the sun and the moon.

A solar eclipse is seen only on a ………….. day.

Solar eclipse is either partial or total.

Sky appears blue to us.

We should not observe the solar eclipse with naked eyes.

We are able to read while sitting in the shade.

Space beyond the earth’s atmosphere appears dark.

What is Occultation?

If a few drops of milk are added in the experiment given the reddish colour seen from the front becomes an intense red. However, if many more drops are added the reddish colour is not seen. Why is this so?

Eclipses and transits which will occur recently.

Will the laser beam be seen if it passes through a glass box which contains a lighted incense stick?

Does the shadow really vanish in the zero shadow condition?

Why is a penumbra not obtained from a point source?

Why is the shadow of a bird flying high not seen on the earth?

Give some examples of scattering of light that we come across in day to day life.

Write a short note on Zero Shadow Day.

What efforts will you make to remove the misconceptions about eclipses?

Solar eclipse and Lunar eclipse.

Umbra and Penumbra.

Point sources and Extended sources.

Complete the Chart.

Short note on Shadow.

Explain the phenomenon of scattering of light with the help of an experiment.

Explain Lunar eclipse with diagram

Explain Solar eclipse with diagram.

Various eclipses and the conditions during that period.