Question 1 Which of these is NOT a form of electromagnetic radiation Gamma rays Infrared Sound Visible light Radio 2017 Pearson Education Inc Question 1 Which of these is NOT a form of ID: 624721
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Slide1
© 2017 Pearson Education, Inc.Slide2
Question
1
Which of these is NOT a form of electromagnetic radiation?Gamma raysInfraredSoundVisible lightRadio
© 2017 Pearson Education, Inc.Slide3
Question 1
Which of these is NOT a form of
electromagnetic radiation?Gamma raysInfraredSoundVisible lightRadio
Explanation: Sound comes
from pressure waves; all
others are types of electro-magnetic radiation of different wavelengths.
© 2017 Pearson Education, Inc.Slide4
Question 2
The distance between successive wave crests defines the _____ of a wave.
wavelengthfrequencyperiodamplitudeenergy
© 2017 Pearson Education, Inc.Slide5
Question 2
The distance between successive wave crests defines the _____ of a wave.
wavelengthfrequencyperiodamplitudeenergyExplanation: Light can range from short-wavelength
gamma
rays to long-wavelength radio waves
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Question 3
The frequency at which a star’s intensity is greatest depends directly on its
radius.mass.magnetic field.temperature.direction of motion.
© 2017 Pearson Education, Inc.Slide7
Question 3
The frequency at which a star’s intensity is greatest depends directly on its
radius.mass.magnetic field.temperature.direction of motion.Explanation: Wien’s law means that
hotter stars produce much more
high-frequency light.
© 2017 Pearson Education, Inc.Slide8
Question 4
Rigel
appears as a bright bluish star, whereas Betelgeuse appears as a bright reddish star.Rigel is _____ Betelgeuse.cooler than the same temperature as older than
hotter than
more massive than
© 2017 Pearson Education, Inc.
The constellation ORION
Betelgeuse
RigelSlide9
Question 4
Rigel
appears as a bright bluish star, whereas Betelgeuse appears as a bright reddish star.Rigel is _____ Betelgeuse.cooler than the same temperature as older than
hotter than
more massive than
Explanation: Hotter
stars look
bluer
in color;
cooler
stars look redder
.
© 2017 Pearson Education, Inc.
The constellation ORION
Betelgeuse
RigelSlide10
Question 5
If a light source is
approaching you, you will observe thatits spectral lines are redshifted.the light is much brighter.its spectral lines are shorter in wavelength.the amplitude of its waves has increased.its photons have increased in speed.
© 2017 Pearson Education, Inc.Slide11
Question 5
If a light source is
approaching
you, you will observe that
its spectral lines are redshifted.
the light is much brighter.
its spectral lines are shorter in wavelength.
the amplitude of its waves has increased.
its photons have increased in speed.
Explanation: The Doppler shift explains that wavelengths from sources approaching us are
blueshifted
.
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Question 6
The wavelengths of
emission lines produced by an elementdepend on its temperature. are identical to its absorption lines. depend on its density.are different from its absorption lines.
depend on its intensity.
© 2017 Pearson Education, Inc.Slide13
Question 6
The wavelengths of
emission lines produced by an elementdepend on its temperature. are identical to its absorption lines. depend on its density.are different from its absorption lines.
depend on its intensity.
Explanation: Elements
absorb or emit the same wavelengths of light
based on their electron energy levels.
© 2017 Pearson Education, Inc.Slide14
Question 7
Analyzing a star’s spectral lines can tell us about all of these EXCEPT its
composition.surface temperature.transverse (side-to-side) motion.rotation.density.
© 2017 Pearson Education, Inc.Slide15
Question 7
Analyzing a star’s spectral lines can tell us about all of these EXCEPT its
composition.surface temperature.transverse (side-to-side) motion.
rotation.
density
Explanation: Only motion toward
or away from us influences a star’s spectral lines. Spectra can also tell us about a star’s magnetic field.
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Question
8
What types of electromagnetic radiation from space reach the surface of Earth? radio waves and microwaves X-rays and ultraviolet light infrared and gamma rays
visible light and radio waves
visible and ultraviolet light
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Question 8
What types of
electromagnetic radiation from space reach the surface of Earth? radio waves and microwaves X-rays and ultraviolet light infrared and gamma raysvisible light and radio wavesvisible and ultraviolet light
Explanation: Earth’s
atmosphere allows
radio waves and visible
light to reach the ground.
© 2017 Pearson Education, Inc.Slide18
Question 9
Which of the following has a fundamentally different nature than the other four?
Proton Electron Neutron Atomic nucleusPhoton
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Question 9
Which of the following has a fundamentally different nature than the other four?
Proton Electron
Neutron
Atomic nucleus
PhotonExplanation: Photons are packages of light energy. Protons, neutrons, and
electrons are particles of matter within an atomic nucleus.
© 2017 Pearson Education, Inc.