Why are clouds white, Science

Assignment Help:

Why are clouds White? Why does a day have 24 hours?

Answer: A cloud is a visible accumulation of very tiny water droplets or solid ice that float in the air. Clouds are usually white in appearance due to the fact that it reflects all the visible wavelengths of light from the sun. The sun's light made up of different colors(rainbow colors)that appear as a white light when combined. These colors can demonstrated using a prism that scatters the sun's light. The water droplets or ice crystals that make up the cloud reflect all the light of the seven visible wavelengths (red, orange, yellow, green, blue, indigo, and violet) all together without dispersing each color. Thus the clouds are white because they effectively reflect the wavelengths of visible light spectrum of the sun in all directions more or less equally. Answer for 2nd Question For thousands of yearspeople all over the world have been using terms and divisions like "day","night","hour", "minute", "yesterday", "tomorrow" to talk about lengths of time The idea of "a day"- from when the sun rises to when it sets-has always been a pretty basic way of thinking about time. Within "a day" people usually break down time into units we call hours. Nobody knows the exact reason why it was decided to measure out an hour so that 24 of them would fit in to a day, but we do know the practice goes all the way back o the ancient Egyptians. One reason they choseto divide a day in to a 12-hour day and a 12-hour night is probably because they used to count a system based on 12. Its also possible they chose 12 because that was the number of moon cycles in a year. , The Egyptians made and used sundials to tell time and by looking at the remains of these, we can trace what is believed to be the origins of our 24-hour day back to them.


Related Discussions:- Why are clouds white

Explain the intercostal muscles, Explain the Intercostal Muscles Look a...

Explain the Intercostal Muscles Look at Figure Can you spot the intercostal muscles? Yes, there are 11 pairs of intercostal muscles. The intercoastal muscles are the muscles

Powerpoint presentation on pulmonary embolism, Collaborative Learning Commu...

Collaborative Learning Community: a) Literature Review Presentation i) In this assignment, the instructor will place the students into groups. You will be required to work to

AQA Additional Science, Whats an easy way to work out force, mass and accel...

Whats an easy way to work out force, mass and acceleration

Define the lymphocytes, Define the Lymphocytes They are agranulocytes. ...

Define the Lymphocytes They are agranulocytes. The nucleus occupies approximately the entire cell. They vary in size from 6- 18 mm diameter; sometimes divide in small and large

Sasasa, what types of birds are there

what types of birds are there

Explain fehling''s test, In Fehling's Test The free sugar group (aldehy...

In Fehling's Test The free sugar group (aldehyde or ketone) reduces the Cu  (cupric) ions in  an alkaline environment  to form Cu 10 (cuprous oxide) and the sugar is itself ox

First aid procedures for chemical accidents, FIRST AID PROCEDURES FOR CHEMI...

FIRST AID PROCEDURES FOR CHEMICAL ACCIDENTS : There are three general procedures to be followed for chemical accidents and all are based on the principle of diluting the hazardous

Explain the term liming - decreasing soil acidity, Explain the term Liming ...

Explain the term Liming - Decreasing Soil Acidity Acid soils can be managed in two ways, viz. either by growing crops suitable for particular soil pH or by treating the soils w

How the lungs work, How the lungs work Cut the bottom off a large bottl...

How the lungs work Cut the bottom off a large bottle. Fit a cork to the neck with a Y tube in it. On every of the lower limbs of the Y tie a rubber balloon or a number of small

Sociological theory , 1. Contrast how a functionalist verses a conflic...

1. Contrast how a functionalist verses a conflict theorist would view the impact and effects of the media on children differently? Be sure to articulate the point of view of e

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd