Color of Sun at Sunrise and Sunset

Q.

Why sky is blue in color?

Q. The red colour of the sun at the time of sunrise and sunset is because :
(a) red colour is least scattered (b) blue colour is least scattered
(c) red colour is most scattered (d) blue colour is most scattered

Q.

Why does the sun appear to be yellow even if the light emitted by it is white, even when there is no material like this glass prism between the light ray and our eyes ?

Q.

Explain why Sun appears white when it is overhead at noon.

Q. What would be the colour of sky if earth had no atmosphere and why?

Q.

Sunlight is of Yellow or white colour?

If it is yellow in colour than how sunlight can make seven colours?

If it is White in colour than why do we see it in Yellow colour?

Q. Which of the following is not caused by the atmospheric refraction of light ?
(a) twinkling of stars at night
(b) sun appearing higher in the sky than it actually is
(c) sun becoming visible two minutes before actual sunrise
(d) sun appearing red at sunset

Q.

What is the colour of sunlight when it is scattered by the dust particles?

1. White

2. Violet

3. Red

4. Blue

Q.

Why the sun looks red in morning and orange in evening and sky looks blue

Q.

(a) Draw a neat and labelled diagram of the experimental set up for observing the scattering of light in a colloidal solution of sulphur to show how the sky appears blue, and the sun appears red at sunrise and sunset.
(b) Out of blue light and red light, which one is scattered more easily ?
(c) Which component of sunlight is scattered away when the sun appears red at sunrise or sunset ?
(d) What causes the scattering of blue component of sunlight in the atmosphere ?

Q.

Sunset is red because at that time the light coming from the sun has to travel :
(a) lesser thickness of earth's atmosphere (b) greater thickness of earth's atmosphere
(c) varying thickness of earth's atmosphere (d) along the horizon

Q.

What is Tyndall Effect? [2 MARKS]

Q. What is the colour of the sunlight :
(a) scattered by the dust particles in the atmosphere ?
(b) scattered by the air molecules in the atmosphere ?

Q.

The sky at noon appears white. Give reason.

Q.

During sunrise and sunset, the colour of sun appears to be ______ .

1. white

2. blue

3. red

4. yellow

Q. In an experiment to study the scattering of light by passing a beam of white light through a colloidal solution of sulphur in a transparent glass tank :
(a) Which colour is observed from the front of the glass tank ? Does this colour correspond to the colour of sky on a clear day or the colour of sky around the sun at sunset ?
(b) Which colour is observed from the sides of the glass tank ? Does this colour correspond to the colour of sky on a clear day or the colour of sky around the sun at sunset ?

Q.

Explain why, when the sun is overhead at noon, it appears white, but when the same sun is near the horizon at sunset, it appears red.

Q.

To an astronaut, why does the sky appear dark instead of blue? [2 MARKS]

Q. Why does the sky appear blue?

Q.

The red colour of the sun at the time of sunrise and sunset is because red colour is ___ scattered.

1. mostly

2. least

3. Sometimes least

4. Can not be determined

Q. Why does the sun appear red at sunset ?

Q. Explain Scattering of light.

Q. Why does the sun appear red at sunrise ?

Q.

The presence of bright sunlight makes __________.

Q. Complete the following statements :
When the sun is setting, the light from it has to travel a ................ thickness of the earth's atmosphere and only ............ wavelength .............. light is able to reach us. Sunset is therefore ............

Q. The sky appears red at sunrise and sunset. Because the red light scatters less and enter our eyes.

1. True
2. False

Q.

Can the visible light be scattered by atoms/ molecules in earth's atmosphere?

Q.

Sun is always red in color.

1. True

2. False

Q. Which of the following statements is/are correct?
$\left(1\right)$ Sun is red during sunset and sunrise.
$\left(2\right)$ Stars twinkle while seen from the moon.
$\left(3\right)$ Blue light scatters more in the moon's atmosphere.

1. $1,2$ and $3$
2. $1$ and $2$
3. $1$ only
4. $2$ and $3$

Q. Sun appears red at sunrise and sunset. This is due to light having _________ gets scattered away.

1. longer wavelengths
2. all frequencies
3. shorter wavelengths
4. lower frequencies