This document discusses the properties and behaviors of light. It defines light as a form of energy that allows us to see and explains how light can reflect off objects, causing reflections. When light hits smooth, flat surfaces it reflects in one direction, but rough surfaces cause light to bounce in many directions. The document also describes how objects can block light and cast shadows, and how light can bend or refract when passing through different materials like water and lenses. Different uses of light are presented, including how the sun provides energy for life on Earth and how humans now use electric lights indoors.

1. 1

2. Ch. 10 , Lesson 5
( Light )
What is light?
• One kind of energy that let us
see.
When light hits an object, some
of it reflects
= bounce off
Vocabulary:
Light
Reflect
Refraction
Objectives:
I will be able to know:
1-how light can reflect
off an object.
2-understand
reflection and
refraction.
2
Light
Reflect

3. Ch. 10 , Lesson 5
( Light )
When light reflects off smooth,
flat objects like a mirror it
bounces in one direction, and you
can see your picture.
When light reflects off rough
objects it bounces in many
directions, and you can see your
reflection funny.
Vocabulary:
Light
Reflect
Refraction
Objectives:
I will be able to know:
3

4. Ch. 10 , Lesson 5
( Light )
Vocabulary:
Light
Reflect
Refraction
Objectives:
I will be able to know:
4

5. Ch. 10 , Lesson 5
( Light )
When object blocks light, it
makes a shadow.
Is a dark area that light doesn’t
reach.
You can make a shadow on the wall
by blocking light with your hand.
Some objects don’t block light, so
they don’t make shadow.
Vocabulary:
Light
Reflect
Refraction
Objectives:
I will be able to know:
5
Shadow

6. Ch. 10 , Lesson 5
( Light )
Glass or water can bend light, this
is called
Light bends when it travels
through hand lens. Bent light make
objects look bigger.
Vocabulary:
Light
Reflect
Refraction
Objectives:
I will be able to know:
6
Refraction

7. Ch. 10 , Lesson 5
( Light )
How do we use light?
Much of Earth’s light is from the
sun.
Living things need the energy
from sunlight.
Without the sun, Earth would be
in darkness.
Nothing would be able to live or
grow here.
Vocabulary:
Light
Reflect
Refraction
Objectives:
I will be able to know:
Identify different uses
of light.
7

8. Ch. 10 , Lesson 5
( Light )
People once used fire for light
indoors and at night.
Now we use electric lights to help
us see.
Vocabulary:
Light
Reflect
Refraction
Objectives:
I will be able to know:
8