Luminous and Non-luminous objects

Luminous and Non-luminous objects

Good day students, we have learnt about Light and its sources in our previous lesson. So today we will be learning about Luminous and Non- Luminous objects.

Let us review!!!

Get ready! Set! Go!

Multiple Select

Light sources can be ___________.

• artificial and man-made

• artificial and natural

• sun and moon

Multiple Choice

All light must come from a light source.

• true

• false

• maybe

LUMINOUS AND NON-LUMINOUS LIGHT SOURCES

Notes time

Many objects do not make their own light, yet they seem to give off light.

• Such objects "throw back" light that reaches them from luminous sources.

• They are classified as non-luminous or illuminated objects.

• They cannot be seen if there is no light shining on them.

Luminous Objects

Any light source that gives off or emits light its own light is luminous.

Look at these examples of luminous sources of light.

Some luminous light sources are :

• Natural

• Man-made or artificial

Man-made or artificial luminous sources

• candle

• lamp

• matches

• flashlight

Natural Luminous Sources of light

• They emit or produce light naturally

• sun

• jellyfish

• glow worm

• lightning

• fire

NON-LUMINOUS SOURCE OF LIGHT

These objects do not produce their own light, they "throw back" or reflect light from luminous objects.

• moon

• table

• earth

Non-luminous objects are sometimes called:

• illuminated objects

Let us review what we have learned so far

GET READY TO PLAY!!!

Multiple Choice

Luminous light sources can be man-made or natural.

• true

• false

Multiple Select

Which of the following are natural luminous sources of light?

Multiple Choice

Lamp, candle, matches and flashlight are all sources of ______________ light sources.

• natural luminous

• man-made luminous

• no answer

Multiple Select

Which of the following are natural luminous sources of light?

• sun

• candle

• lamp

• fire

• lightning

Multiple Choice

Which source of light produce its own light?

• luminous

• non-luminous

Multiple Choice

Non-luminous light sources does not produce its own light. Tables, chairs, moon and people are examples of this light source.

• true

• false

Multiple Select

Click all the natural luminous sources of light below.

• lightbulb

• star

• flashlight

• glow worm

• fire

Poll

What is the difference between natural luminous light sources and man-made luminous light sources?

• they both produce light

• one is man-made and the other is from God

• there is no difference

• they are both operated by human