Question

Explain in brief the reason for each of the following: (i) The sun appears reddish during sun-rise.(ii) At noon the sun appears white. (iii) To an astronaut the sky appears dark instead of blue.

Answer 1

i)the sunlight has to travel at an angle and thus cover a longer distance through the atmosphere. It encounters more obstacles in its path. Most of the colours, like green and violet, get scattered before the light reaches the earth. Since red is scattered the least, it is this colour that we see as it reaches us.
ii)during noon all the colors r scattered equally so we can see whitish appearance.
iii)as there is no atmosphere in the space there to scatter light....

hope this helps...
please mark it as the brainliest...

Answer 2

Answer:

ɪ) ᴅᴜʀɪɴɢ sᴜɴʀɪsᴇ, ᴛʜᴇ ʟɪɢʜᴛ ʀᴀʏs ᴄᴏᴍɪɴɢ ғʀᴏᴍ ᴛʜᴇ sᴜɴ ʜᴀᴠᴇ ᴛᴏ ᴛʀᴀᴠᴇʟ ᴀ ɢʀᴇᴀᴛᴇʀ ᴅɪsᴛᴀɴᴄᴇ ɪɴ ᴛʜᴇ ᴇᴀʀᴛʜ's ᴀᴛᴍᴏsᴘʜᴇʀᴇ ʙᴇғᴏʀᴇ ʀᴇᴀᴄʜɪɴɢ ᴏᴜʀ ᴇʏᴇs. ɪɴ ᴛʜɪs ᴊᴏᴜʀɴᴇʏ, ᴛʜᴇ sʜᴏʀᴛᴇʀ ᴡᴀᴠᴇʟᴇɴɢᴛʜs ᴏғ ʟɪɢʜᴛs ᴀʀᴇ sᴄᴀᴛᴛᴇʀᴇᴅ ᴏᴜᴛ ᴀɴᴅ ᴏɴʟʏ ʟᴏɴɢᴇʀ ᴡᴀᴠᴇʟᴇɴɢᴛʜs ᴀʀᴇ ᴀʙʟᴇ ᴛᴏ ʀᴇᴀᴄʜ ᴏᴜʀ ᴇʏᴇs. ᴛʜᴇʀᴇғᴏʀᴇ, ᴛʜᴇ sᴜɴ ᴀᴘᴘᴇᴀʀs ʀᴇᴅᴅɪsʜ ᴇᴀʀʟʏ ɪɴ ᴛʜᴇ ᴍᴏʀɴɪɴɢ.

ɪɪ) ᴀᴛ ɴᴏᴏɴ ᴡᴇ ᴋɴᴏᴡ ᴛʜᴀᴛ ᴛʜᴇ sᴜɴ ɪs ᴏᴠᴇʀʜᴇᴀᴅ ᴀɴᴅ ᴡʜᴇɴ ᴛʜᴇ sᴜɴ ɪs ᴏᴠᴇʀʜᴇᴀᴅ , ɪᴛ ʜᴀs ʟᴇss ᴀɪʀ ᴛᴏ ᴛʀᴀᴠᴇʟ ᴛʜʀᴏᴜɢʜ. sᴏ, sᴄᴀᴛᴛᴇʀɪɴɢ ɪs ʀᴇᴅᴜᴄᴇᴅ ɪғ ᴛʜᴇ ᴅɪsᴛᴀɴᴄᴇ ᴛᴏ ʙᴇ ᴛʀᴀᴠᴇʟʟᴇᴅ ɪɴ ᴀɪʀ ɪs ʀᴇᴅᴜᴄᴇᴅ. ᴛʜᴇʀᴇғᴏʀᴇ, ᴛʜᴇ ʟᴇᴀsᴛ ᴀᴍᴏᴜɴᴛ ᴏғ sᴄᴀᴛᴛᴇʀɪɴɢ ᴏᴄᴄᴜʀs ᴡʜɪᴄʜ ʀᴇsᴜʟᴛs ɪɴ ᴛʜᴇ ᴀᴘᴘᴇᴀʀᴀɴᴄᴇ ᴏғ ᴡʜɪᴛᴇ ʟɪɢʜᴛ.

ɪɪɪ) ɪɴ ᴏᴜᴛᴇʀ sᴘᴀᴄᴇ, ᴛʜᴇ sᴋʏ ᴀᴘᴘᴇᴀʀs ᴅᴀʀᴋ ɪɴsᴛᴇᴀᴅ ᴏғ ʙʟᴜᴇ ᴛᴏ ᴀɴ ᴀsᴛʀᴏɴᴀᴜᴛ ʙᴇᴄᴀᴜsᴇ ᴛʜᴇʀᴇ ɪs ɴᴏ ᴀᴛᴍᴏsᴘʜᴇʀᴇ ᴄᴏɴᴛᴀɪɴɪɴɢ ᴀɪʀ ɪɴ ᴏᴜᴛᴇʀ sᴘᴀᴄᴇ ᴛᴏ sᴄᴀᴛᴛᴇʀ sᴜɴʟɪɢʜᴛ. sɪɴᴄᴇ ᴛʜᴇʀᴇ ɪs ɴᴏ sᴄᴀᴛᴛᴇʀᴇᴅ ʟɪɢʜᴛ ᴛᴏ ʀᴇᴀᴄʜ ᴏᴜʀ ᴇʏᴇs ɪɴ ᴏᴜᴛᴇʀ sᴘᴀᴄᴇ, ᴛʜᴇ sᴋʏ ᴀᴘᴘᴇᴀʀs ᴛᴏ ʙᴇ ᴅᴀʀᴋ ᴛʜᴇʀᴇ.