Eyeball and Lenses Flashcard

Front

What is a lens?

Back

A curved piece of glass or plastic that causes objects to appear closer or further away.

Front

What happens to your pupils on a sunny day?

Back

They shrink smaller.

Front

Why do some animals see better in the dark?

Back

Their pupils are bigger.

Front

Which of the following does NOT contain a lens: magnifying glass, telescope, ruler, microscope?

Back

Ruler.

Front

What do concave lenses do to objects?

Back

They make objects appear smaller than they really are.

Front

Give an example of a concave lens.

Back

Peep hole.

Front

What is the function of a convex lens?

Back

To make objects appear larger.

Front

What is the role of the pupil in the eye?

Back

To control the amount of light that enters the eye.

Front

What type of lens is used in a magnifying glass?

Back

Convex lens.

Front

What is the difference between concave and convex lenses?

Back

Concave lenses make objects appear smaller, while convex lenses make objects appear larger.