Grade-9 Light

• physics, science
• Secondary Education

SCIENCE 

GRADE-9

NOV 9, 2020

Ms. Famin

interpret 

OBJECTIVES 

DESCRIBE LIGHT SOURCE,LIGHT RAYS

DIFFERENTIATE THE DIFFERENT TYPES OF OBJECTS

Name a few light-emitting objects

nuclear into light energy

chemical into light energy

Light source 

A light source is something that emits light.

Light sources convert other forms of energy into light energy .

Analyze

how does the light travel from one direction to another?

Light ray 

A light ray is a narrow beam of light that travels in a straight line.

Analyze 

How does the light ray travels if it does not come into contact with a surface?

seeing objects 

When you see a light source, light rays travel directly from the light source into your eye. light rays also reflect off objects. Light rays reflect from an object in may directions.some of the light rays that reflect from an object enter your eye, enabling you to see the object

Do you think light waves interact with these objects similarly?

Which objects completely block the light to pass through them?

1. transparent
2. translucent
3. opaque
4. none of the above

A narrow beam of light is known as

1. a light ray
2. a light segment
3. reflection
4. refraction

A material is if it allows most of the light that strikes it
to pass through but forms a blurry image.

1. opaque
2. translucent
3. transparent
4. all of these

transparent

opaque 

translucent 

JUDGE - Frosted glass is made of glass with a scratched surface. Decide whether frosted glass is opaque, translucent or transparent and explain your reasoning

did you enjoy the topic