Which celestial body is seen as a bright streak of light coming down the night sky ?

The bluish white streak of light seen during lightning is due to

A collection of gas and dust which appears as a bright ball of light in the sky with a glowing tail is called.

The bodies glowing in the night sky are known as

In which season of the year are the following constellations visible in the night sky ? Cassiopeia

_____ are celestial bodies that emit light of their own.

Which part of human eye is most sensitive to bright light?

Two transparent plastic sheets of red and blue colour overlap as shown in the Fig. An observer looks at a clear sky through the sheets. What can you say about the colour and brightness of light coming through sections 1, 2 and 3 (see Fig.)

Directions : In the following questions, you have two brief passages with 5 questions following each passage. Read the pas sages carefully and choose the best answer to each question out of the four alternatives. PASSAGE-II (9. Nos. 196 to 200) Two or three days and nights went by, I reckon I might say they swum by, they slid along so quiet and smooth and lovely. Here is the way we put it in the time. It was a monstrous big river down there - sometimes a mile and a half wide, we ran nights, and laid up and hid daytimes, soon as night was most gone we stopped navigating and tied up - nearly always in the dead water under a towhead, and then cut young cottonwoods and willows, and hid the raft with them. Then we set out the lines. Next we slid into the river and had a swim, so as to freshen up and cool off, then we set down on the sandy bottom where the water was about knee deep and watched the daylight come. Not a sound anywhere - perfectly still – just like the whole world was asleep only sometimes the bullfrogs a cluttering maybe. The first thing to see, looking away over the water was a kind of dull line - that was the woods on t' other side: you couldn't make nothing else out, then a pale place in the sky, then more pale ness spreading around, then the river softened up away off, and wasn't black any more, but gray: you could see little dark spots drifting along ever so far away - trading scows and such things and long black streaks -rafts, sometimes you could hear a sweep creaking or jumbled up voices, it was so still and sounds come so far and by and by you could see a streak on the water which you know by the look of the streak that there's a snag there in a swift current which breaks on it and makes that streak look that way. In the stillness of the night