What is it?
The light moves from the Sun to eyes.
What is it?
The puppy reflects the light from the Sun to eyes.
The lamp is ___.
illuminous
luminous
The firefly is ___ light.
natural
artificial
What energy does the Sun give us?
light & heat energy
Which one reflect light the most?
blackboard
paper
mirror
How to protect your eyes?
wear sunglasses
What is it?
provide warmth
The flashlight is ___ light.
natural
artificial
What is the speed of light?
low
no
high
The Sun is ___.
illuminous
luminous
What is it?
help us see things
How to protect your eyes?
use anti-blue light
The lightning is ___ light.
natural
artificial
What is it?
light and heat energy
The book is ___.
luminous
illuminous
The puppy is ___.
illuminous
luminous
What is it?
electricity through solar cells
What is it?
The book reflects the light from the Sun to eyes.
What is it?
The light moves from the lamp to eyes.
What is the most important energy source?
The Moon
The Earth
The Sun
What is it?
day and night
What is it?
plants grow and photosynthesis
What is it?
preserve food
What is the movement of the light?
straight
curve
zigzag
The light bulb is ___ light.
artificial
natural