# 1st Grade Science : Observe objects in darkness when illuminated

## Example Questions

### Example Question #11 : Illumination Of Objects In Darkness

Objects can be seen if a light is available to illuminate them or if they give off their own light.

True

False

True

Explanation:

This statement is true. Objects cannot be seen if it is dark. There has to be light from an outside source, or the object has to produce its own light to be seen.

### Example Question #12 : Illumination Of Objects In Darkness

An object can be seen when light reflected from its surface enters the _________.

eye

mouth

nose

eye

Explanation:

The light must reflect off the surface and enter the eye to be seen. An object will not be seen in darkness because there is no light reflecting off of the object's surface.

### Example Question #13 : Illumination Of Objects In Darkness

Nancy cannot find her favorite shoes in the back of her dark closet. She grabs a flashlight and sees them! Why couldn't she find them before she turned on the flashlight?

It was too dark.

It was too light.

The shoes were not there.

Nancy didn't look hard enough.

It was too dark.

Explanation:

Nancy could not see her shoes in the dark closet because humans cannot see when there is no light. The light must shine on an object and reflect into our eyes for us to see the object clearly, or it must make its own light. Shoes cannot make their own light, and the back of the closet was too dark for her to see.

### Example Question #14 : Illumination Of Objects In Darkness

What does the word illuminate mean? Example: I had to illuminate the dark cave to see if there was danger up ahead.

To explore

To leave

To darken

To light up

To light up

Explanation:

The word illuminate means to light something up. Humans have good vision, but we do not see well at night because there is limited light. Our eyes rely on light to reflect off the surface of an object so that we can see.

### Example Question #15 : Illumination Of Objects In Darkness

Which choice would be the BEST to illuminate a dark room?

A small candle

A lantern

A lantern

Explanation:

The best choice to illuminate (or light up) a dark room would be a lantern. A radio would give off little to no light, and a small candle would only produce enough light to see a few inches ahead of you. A lantern would give off much more light and help you to see in the dark.

### Example Question #16 : Illumination Of Objects In Darkness

Which object makes its own light?

A soda can

A glow stick

A dog

A glow stick

Explanation:

A glow stick produces its own light. You can use a glow stick to illuminate a small dark area or to make yourself more easily seen at night time. Glow sticks make their own light when two chemicals are mixed after snapping or shaking the stick.

### Example Question #17 : Illumination Of Objects In Darkness

Bobby's teacher placed a secret object in a cardboard box and taped it closed. She poked small holes in the sides with a pen. She asked Bobby to look inside and tell her the secret object. He tried hard but couldn't tell what was in the box. What is the reason why Bobby couldn't see what was in the box?

The secret object was not something he liked.

It was too dark in the box.

The box was too big.

It was too dark in the box.

Explanation:

Bobby couldn't see in the box because it was too dark! Tiny pinholes are not big enough to let enough light inside the box. If Bobby were to make larger holes or more holes, it would allow more light in to illuminate the object.

### Example Question #18 : Illumination Of Objects In Darkness

The lightning bug is neat because it can make its own light. How does this help the bug?

It makes them look better than the other animals.

It makes it easier to find other lightning bugs.

It makes it easier for predators to find them.

It makes it easier to find other lightning bugs.

Explanation:

Lightning bugs use their internal light source to attract other insects. They might eat the other bugs that come to visit them, or if they are from the same species, they may become mates.

### Example Question #19 : Illumination Of Objects In Darkness

Why are you able to see these beautiful fish lanterns even in the dark?

They are live fish who are able to glow in the dark.

There is a light source inside the fish illuminating the dark.

People are shining flashlights on the fish.

There is a light source inside the fish illuminating the dark.

Explanation:

These beautiful oriental fish lanterns are visible in the dark because there is a light source inside of them illuminating the darkness. Humans must have light to reflect off of an object's surface for our eyes to process the image.

### Example Question #20 : Illumination Of Objects In Darkness

Which of these objects would illuminate a cave so we can see the objects inside?

Explanation:

The best object to bring into a cave would be the fire torch. This would illuminate or light up the area around you so that hidden objects (or dangers) would be visible. In the dark, without any light source, we would not know what is up ahead.