Atmospheric Refraction

Assessment

Atmospheric Refraction

Atmospheric Refraction (Mirage, Twinkling of Stars)

ninja coder

Physics

Grade10

10 Plays

100 Participants

Worksheet

10 Qs

1.
Multiple Choice
1 pts•30 s
Explain the phenomenon that causes stars to appear to twinkle at night.
Answer choices
Dispersion of light
Atmospheric refraction
Reflection of light
Diffraction of light
2.
Multiple Choice
1 pts•30 s
Describe what causes a mirage to appear on a hot desert road.
Answer choices
Total internal reflection due to varying air densities
Scattering of sunlight by sand particles
Absorption of light by the ground
Diffraction of light around obstacles
3.
Multiple Choice
1 pts•30 s
Identify the reason stars twinkle more when observed near the horizon.
Answer choices
Light travels through less atmosphere
Light travels through more atmosphere
Stars are brighter near the horizon
Stars emit more light at lower angles
4.
Multiple Choice
1 pts•30 s
Name the process that makes stars appear slightly higher in the sky than their actual position.
Answer choices
Reflection
Atmospheric refraction
Dispersion
Polarization
5.
Multiple Choice
1 pts•30 s
Point out why a mirage looks like a pool of water on a hot road.
Answer choices
Light from the sky is refracted to appear as water
Light from the road is absorbed
Water evaporates and reflects light
Light scatters randomly in the air
6.
Multiple Choice
1 pts•30 s
Clarify why twinkling of stars is not observed during the day.
Answer choices
Stars are too far away
Sunlight overpowers starlight
Atmosphere is denser during the day
Stars stop emitting light
7.
Multiple Choice
1 pts•30 s
State the cause of varying air density that leads to atmospheric refraction.
Answer choices
Uniform temperature throughout the atmosphere
Temperature gradients in the atmosphere
Constant air pressure
Absence of water vapor
8.
Multiple Choice
1 pts•30 s
Describe the path of light in a mirage due to atmospheric refraction.
Answer choices
Light bends towards the hotter air
Light bends towards the cooler air
Light travels in a straight line
Light scatters in all directions
9.
Multiple Choice
1 pts•30 s
Indicate why planets appear to twinkle less than stars.
Answer choices
Planets are closer and appear as disks
Planets emit stronger light
Planets have no atmosphere
Planets reflect all wavelengths equally
10.
Multiple Choice
1 pts•30 s
Explain the effect of atmospheric refraction on the apparent position of the Sun at sunrise.
Answer choices
Sun appears lower than its actual position
Sun appears higher than its actual position
Sun appears at its actual position
Sun disappears due to refraction