Light and Shadows Flashcards
1
Q
What is light?
A
Light is a form of energy that supports life
2
Q
Define Visible Light
A
Visible light is a portion og tje electromagnetic spectrum that is visible to human eyes.
3
Q
What is the speed of light?
A
The speed of light is 3 x 10⁸
4
Q
Why does an eclipse occur?
A
An eclipse occurrs because light travels in a straight line.
5
Q
How are shadows formed?
A
Shadows are formed when light is blocked by an opaque object
6
Q
How are shadows formed?
A
As light travels in a straight line, it cannot bend around an opaque object so it forms a region of darkness.
7
Q
What is ‘ray’?
A
The path along which light travels
8
Q
How is a beam of light formed?
A
A beam of light is formed when a bundle of rays come together.
