Science Lesson- light

Why does the sky appear blue?

• The sky is blue due to the presence of water vapor.
• The sky appears blue because of the ocean's reflection.
• The sky looks blue because of the Earth's magnetic field.
• The sky appears blue due to Rayleigh scattering of sunlight.

What is the angle of incidence?

• The angle of incidence is the right angle

• The angle of incidence is always 90 degrees.
• The angle of incidence is the angle between the incident ray and the normal to the surface.
• The angle of incidence is the angle between the reflected ray and the surface.

When light bends, what is it known as?

• Dispersion

• Refraction

• normal

• Reflection

Law of reflection

• The angle of incidence is always greater than the angle of reflection.
• The angle of incidence is half of the angle of reflection.
• The angle of incidence and reflection are always 90 degrees.
• The angle of incidence equals the angle of reflection.

What is the cause of refraction?

• The cause of refraction is the change in speed of light as it moves between different media.
• Refraction is the bending of sound waves.
• Refraction occurs only in gases.
• Refraction is caused by the reflection of light.

Give the examples of refraction from real life.

• A shadow cast by an object
• Examples of refraction in real life include a straw in water appearing bent, the bending of light in a prism, and the distortion of objects underwater.
• A mirror reflecting an image
• A mirror shining