Light 5

Question 1

What is a combination of several different wavelengths of light traveling together called?

Answer 1

white light

Question 2

The band of light waves of different colors in the electromagnetic spectrum that vibrates at frequencies our eyes can detect is the __________.

Answer 2

visible spectrum

Question 3

What is the ability of light to cause change, such as heating an object, called?

Answer 3

light energy

Question 4

A material that lets most light waves pass through it is __________.

Answer 4

transparent

Question 5

A material that lets some light waves pass through it is __________.

Answer 5

translucent

Question 6

A material that lets no light waves pass through is __________.

Answer 6

opaque

Question 7

What is a surface that curves inward or a lens that is thinnest at the center called?

Answer 7

concave

Question 8

What is a surface that bulges outward or a lens that is thickest at the center called?

Answer 8

convex

Question 9

What is the change in the direction of waves after they bounce off of a surface called?

Answer 9

reflection

Question 10

What is the bending of waves as they travel at an angle from one medium to another called?

Answer 10

refraction

Question 11

What does light do when it hits an opaque object?

Answer 11

It is either absorbed or reflected.

Question 12

What is the color of light determined by?

Answer 12

wavelength

Question 13

What color in the visible spectrum has the longest wave length?

Answer 13

red

Question 14

What color in the visible spectrum has the shortest wave length?

Answer 14

violet

Question 15

When white light strikes an object, some wavelengths are absorbed and others are reflected. The color you see is the wavelength of light that is __________.

Answer 15

reflected

Question 16

Through what type of lens do objects appear to be larger than they really are?

Answer 16

convex

Question 17

Through what type of lens do objects appear to be smaller than they really are?

Answer 17

concave

Question 18

Optical tools enlarge or make images clearer. This is possible through the use of __________.

Answer 18

lenses and mirrors

Question 19

An optical tool that can be used to refract white light is called a __________.

Answer 19

prism

Question 20

Do light waves need materials to travel through?

Answer 20

no

Question 21

Light from the sun can travel 150 million kilometers to Earth in less than __________.

Answer 21

8 ¹/₂ minutes

Question 22

Who was the Italian physicist and astronomer who built a telescope that allowed him to discover mountains and valleys on the Moon, the four major satellites of Jupiter, and that the Milky Way was made up of stars?

Answer 22

Galileo Galilei

Question 23

Who was the English pioneer in microscopic research who discovered plant cells?

Answer 23

Robert Hooke

Question 24

Who was the Dutch maker of microscopes who made pioneering discoveries concerning protozoa, red blood cells, and the life cycle of insects?

Answer 24

Anton van Leeuwenhoek

Question 25

Who was the English scientist that established the modern study of optics, showed that white light can be seperated into the different colors of the visible spectrum by experimenting with prisms, and built the first reflecting telescope?

Answer 25

Isaac Newton