Final answer:
Light is similar to sound in that it moves in waves and it can be perceived by our senses. A light year is the distance that light travels in one year and light can travel a distance of 300,000 kilometers in one second. When light bounces off an object, it is called reflection, and the angle of reflection is equal to the angle of incidence. The moon's light comes from reflected sunlight. When you shine a flashlight at a mirror, the ray of light that shines back at you is the ray of reflection, not the ray of incidence.
Step-by-step explanation:
The correct answer is:
- It moves in waves
Both light and sound can be described as waves. They both have properties such as frequency and wavelength. Light waves are electromagnetic waves, which means they can travel through a vacuum, while sound waves require a medium, such as air or water, to travel.
The correct answer is:
- The distance light travels in one year
A light year is a unit of measurement used in astronomy to represent the distance that light travels in one year. Light travels at a speed of approximately 300,000 kilometers per second, so in one year, it would travel about 9.5 trillion kilometers.
The correct answer is:
- 300,000 kilometers
Light travels at a speed of about 300,000 kilometers per second. This means that in one second, light can travel a distance of 300,000 kilometers. It is important to note that this value may vary slightly depending on the medium through which light is traveling.
The correct answer is:
- Reflection
When light bounces off an object, it is called reflection. This can happen when light hits a smooth and shiny surface, such as a mirror. The angle at which the light hits the surface is called the angle of incidence, and the angle at which it bounces off is called the angle of reflection.
The correct answer is:
- 30 degrees
According to the law of reflection, the angle of incidence is equal to the angle of reflection. So if the angle of incidence is 30 degrees, then the angle of reflection would also be 30 degrees.
The correct answer is:
- True
Yes, the moon's light comes from reflected sunlight. The moon does not have its own source of light, so it reflects the light from the Sun. This is why we see the moon as a bright object in the night sky.
The correct answer is:
- False
When you shine a flashlight at a mirror, the ray of light that shines back at you is not the ray of incidence. Instead, it is the ray of reflection. The incident ray is the ray of light that initially strikes the mirror.