Question 1

The main difference between a radio wave and a sound wave is

Accepted Answer

A) frequency. 
B) wavelength. 
C) energy. 
D) amplitude. 
E) basic nature. 
A) frequency. 
B) wavelength. 
C) energy. 
D) amplitude. 
E) basic nature.

Question 2

Compared with the photons of light that shines on glass,the emerging photons are

Accepted Answer

A) the same photons. 
B) different though identical. 
C) a mixture of being the same and different. 
A) the same photons. 
B) different though identical. 
C) a mixture of being the same and different.

Question 3

Explain why the sky is blue.

Accepted Answer

Nitrogen and oxygen molecules in the atm

Question 4

When light is refracted,there is a change in its

Accepted Answer

A) frequency. 
B) wavelength. 
C) both of these 
D) neither 
A) frequency. 
B) wavelength. 
C) both of these 
D) neither

Question 5

If you walk toward a mirror at a certain speed,the relative speed between you and your image is

Accepted Answer

A) half your speed. 
B) your speed. 
C) twice your speed. 
D) none of the above 
A) half your speed. 
B) your speed. 
C) twice your speed. 
D) none of the above

Question 6

The secondary rainbow is dimmer than the primary rainbow because

Accepted Answer

A) its colors are inverted. 
B) it is larger,and its energy spreads across more area. 
C) it is farther from the viewer. 
D) it simply has much less energy than the primary bow. 
E) of a double reflection and refraction in the drops. 
A) its colors are inverted. 
B) it is larger,and its energy spreads across more area. 
C) it is farther from the viewer. 
D) it simply has much less energy than the primary bow. 
E) of a double reflection and refraction in the drops.

Question 7

When the tiny hole in a pinhole camera is made larger,the image is

Accepted Answer

A) brighter but less clear. 
B) clearer. 
C) right-side up. 
D) none of the above 
A) brighter but less clear. 
B) clearer. 
C) right-side up. 
D) none of the above

Question 8

The brightest color emitted by the Sun is

Accepted Answer

A) red. 
B) yellow-green. 
C) blue. 
D) all the same 
A) red. 
B) yellow-green. 
C) blue. 
D) all the same

Question 9

Colors seen on TV result from color

Accepted Answer

A) addition. 
B) subtraction. 
C) either of these 
D) none of the above 
A) addition. 
B) subtraction. 
C) either of these 
D) none of the above

Question 10

A beam of light emerges from water into air at an angle bent

Accepted Answer

A) towards the normal 
B) away from the normal. 
C) in a direction parallel to the normal. 
D) in a direction perpendicular to the normal. 
E) not at all. 
A) towards the normal 
B) away from the normal. 
C) in a direction parallel to the normal. 
D) in a direction perpendicular to the normal. 
E) not at all.

Question 11

Which have the longest wavelengths when traveling in a vacuum?

Accepted Answer

A) radio waves 
B) light 
C) X-rays 
D) all the same 
A) radio waves 
B) light 
C) X-rays 
D) all the same

Question 12

The complementary color of blue is

Accepted Answer

A) red. 
B) green. 
C) yellow. 
D) cyan. 
E) magenta. 
A) red. 
B) green. 
C) yellow. 
D) cyan. 
E) magenta.

Question 13

Which of these has a higher frequency than visible light?

Accepted Answer

A) radio wave 
B) microwave 
C) infrared wave 
D) ultraviolet wave 
E) all do 
A) radio wave 
B) microwave 
C) infrared wave 
D) ultraviolet wave 
E) all do

Question 14

Red sunsets are due to light of lower frequencies that

Accepted Answer

A) is scattered from larger particles in the air. 
B) is refracted from larger particles in the air. 
C) is reflected by clouds and relatively large particles in the air. 
D) survive being scattered in the air. 
E) appear reddish orange to the eye. 
A) is scattered from larger particles in the air. 
B) is refracted from larger particles in the air. 
C) is reflected by clouds and relatively large particles in the air. 
D) survive being scattered in the air. 
E) appear reddish orange to the eye.

Question 15

Complementary colors are two colors that

Accepted Answer

A) share the same color scheme. 
B) are additive primary colors. 
C) are subtractive primary colors. 
D) produce white light when combined. 
A) share the same color scheme. 
B) are additive primary colors. 
C) are subtractive primary colors. 
D) produce white light when combined.

Question 16

Poke a pinhole in a piece of card and hold it in sunlight and an image of the Sun is cast on the floor.The Sun-image diameter depends on the height of the pinhole above the floor.Measurements for all heights show the Sun-image diameter is about 1/100 the distance between the pinhole and the floor.This means that

Accepted Answer

A) about 100 end-to-end Sun images would fit between the pinhole and the floor. 
B) distance-wise,the Sun is about 100 Suns away from Earth. 
C) both of these 
D) none of the above 
A) about 100 end-to-end Sun images would fit between the pinhole and the floor. 
B) distance-wise,the Sun is about 100 Suns away from Earth. 
C) both of these 
D) none of the above

Question 17

Electromagnetic waves consist of

Accepted Answer

A) compressions and rarefactions of electromagnetic pulses. 
B) vibrating electric and magnetic fields. 
C) particles of light energy. 
D) high-frequency sound waves. 
A) compressions and rarefactions of electromagnetic pulses. 
B) vibrating electric and magnetic fields. 
C) particles of light energy. 
D) high-frequency sound waves.

Question 18

The whiteness of clouds is due mainly to

Accepted Answer

A) scattering. 
B) reflection. 
C) polarization. 
D) water prisms. 
A) scattering. 
B) reflection. 
C) polarization. 
D) water prisms.

Question 19

Which of the following occupies the smallest percentage of the electromagnetic spectrum?

Accepted Answer

A) radio waves 
B) microwaves 
C) visible light 
D) gamma rays 
A) radio waves 
B) microwaves 
C) visible light 
D) gamma rays

Question 20

Which becomes warmer in sunlight,sunglasses or clear reading glasses?

Accepted Answer

A) sunglasses. 
B) reading glasses. 
C) both of these 
D) none of the above 
A) sunglasses. 
B) reading glasses. 
C) both of these 
D) none of the above

Exam 11: Light

The main difference between a radio wave and a sound wave is

Compared with the photons of light that shines on glass,the emerging photons are

Explain why the sky is blue.

When light is refracted,there is a change in its

If you walk toward a mirror at a certain speed,the relative speed between you and your image is

The secondary rainbow is dimmer than the primary rainbow because

When the tiny hole in a pinhole camera is made larger,the image is

The brightest color emitted by the Sun is

Colors seen on TV result from color

A beam of light emerges from water into air at an angle bent

Which have the longest wavelengths when traveling in a vacuum?

The complementary color of blue is

Which of these has a higher frequency than visible light?

Red sunsets are due to light of lower frequencies that

Complementary colors are two colors that

Electromagnetic waves consist of

The whiteness of clouds is due mainly to

Which of the following occupies the smallest percentage of the electromagnetic spectrum?

Which becomes warmer in sunlight,sunglasses or clear reading glasses?

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

Elements of Chemistry

How Atoms Bond and Molecules Attract

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Organic Compounds

Rocks and Minerals

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Time - Reading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: The Nature of Science

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