Which of these is man-made source of light?
Neon sign and fireworks
What is the importance plants for human and animals?
Plants are the source of food for humans and animals.
What is the meaning of "light sources"?
Light sources are things that give off light.
This light helps drivers to see to see the road and other vehicles in the night.
Headlights
Why we cannot say that Moon is a source of light?
Moon does not give off light. It is bouncing light from the Sun.
What is darkness?
Darkness is the absence of light.
Why plants need light?
So they can make food.
What is Light?
Light is a form of energy.
Can you see yourself in the mirror when it is totally dark? Why?
No. We cannot see anything when it is dark.
The main light source during daytime is ...
Sun
How can we see things?
The light falls on the object and bounces into our eyes. Our eyes send messages to our brain to tell us what we see.
Why do we need plants to keep producing food?
Humans and animals are using plants as their food. That's why we need plants to keep producing food.
Why do we need lighthouse?
It helps the sailor or fisherman to see things in the ocean.
What do we need to see some things around us?
We need lights to see things around us.
Is it possible for the mirror ball to shine when the light is on? Why?
Yes. The mirror ball will shine when the light is on because it bounces light from the lamp.