What is a form of energy that enables us to see?

• light

• shadow

• rainbow

What is the biggest source of light?

• moon

• star

• lightning

• Sun

Which of the following is a natural source of light?

• light bulb

• fluorescent light

• firefly

• flashlight

Which of the following is an example of artificial source of light?

• moon

• lighted candle

• Sun

• firefly

What is formed behind the object when light is fully or partially blocked by an object?

• rainbow

• reflection

• shadow

• virtual image

What do you call the image seen in the mirror?

• virtual reality

• virtual image

• shadow

• refracted image

Light travels the fastest in _____________.

• a vacuum

• water

• glass

• diamond

How many colors are there in a rainbow?

• 5

• 6

• 7

• 8

What is the order of colors in a rainbow?

• Red, Indigo, Violet, Yellow, Orange, Green, Blue

• Red, Orange, Yellow, Green, Blue, Indigo, Violet

• Orange, Green, Blue, Indigo, Violet, Red, Yellow

There are ______ types of lenses.

• 1

• 2

• 3

• 4