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Introducing new Paper mode
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20 questions
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- Multiple ChoicePlease save your changes before editing any questions.
Which of the following EM radiation has the highest frequency and energy?
X-rays
Infrared
Visible light
Microwaves
- Multiple ChoicePlease save your changes before editing any questions.
How do stars form?
Stars form directly from black holes as they are created from supernovae.
Stars formed as gravity split off from the combined force just after the Big Bang.
Stars formed as soon as hydrogen atoms began being mass-produced about 380,000 years after the Big Bang.
Stars form as the dust and gas of the Universe are drawn in and condensed by gravity to smaller and smaller areas.
- Multiple ChoicePlease save your changes before editing any questions.
Clouds of gases and dust that absorb ionizing ultraviolet radiation from nearby hot stars or star remnants and reemit it as visible light are called:
bright reflection nebulae.
bright emission nebulae.
supernova remnants.
dark nebulae.
neutron stars.
- Multiple ChoicePlease save your changes before editing any questions.
Identify this object.
a white dwarf star
the planet Jupiter
the Eskimo nebula
the Pillars of Creation in the Eagle Nebula
- Multiple ChoicePlease save your changes before editing any questions.
The Crab Nebula is actually:
a planetary nebula.
a white dwarf star.
a red supergiant star.
a supernova remnant.
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is classified as a dark nebula?
- Multiple ChoicePlease save your changes before editing any questions.
Astronomers use the term _____________________ to describe how bright a star appears from Earth.
apparent magnitude
radiometry
luminance
Doppler Shift
- Multiple ChoicePlease save your changes before editing any questions.
When the core of a middle-sized star shrinks and the outer layers of the star are expelled into space, which of the following are formed? CHOOSE ALL THAT APPLY!
a planetary nebula
a black hole
a neutron star
a white dwarf star
- Multiple ChoicePlease save your changes before editing any questions.
Nearly all of Earth's energy needs are met by:
wind power.
the Sun.
oil and water.
gamma rays.
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is the "engine" for stars?
gravity
chemical combustion
thermonuclear fusion
electromagnetism
- Multiple ChoicePlease save your changes before editing any questions.
In a binary star system, the stars are orbiting each other.
True
False
- Multiple ChoicePlease save your changes before editing any questions.
A star at apparent magnitude +1.2 would appear brighter to us than a star at apparent magnitude +3.9.
True
False
- Multiple ChoicePlease save your changes before editing any questions.
Which of these stars has the highest surface temperature?
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following have we named "the Trapezium "?
- Multiple ChoicePlease save your changes before editing any questions.
This is an example of:
an elliptical galaxy.
a spiral galaxy.
a supernova remnant.
a planetary nebula.
- Multiple ChoicePlease save your changes before editing any questions.
Which type of galaxy contains mostly young stars?
irregular galaxies
elliptical galaxies
spiral galaxies
barred-spiral galaxies
- Multiple ChoicePlease save your changes before editing any questions.
The first galaxies formed:
about 1 billion years ABB.
about 200 million years ABB.
about 380000 years ABB.
about 4.6 billion years ago.
- Multiple ChoicePlease save your changes before editing any questions.
Astronomers now agree that the Milky Way is shaped like this.
True
False
- Multiple ChoicePlease save your changes before editing any questions.
Galaxies may be partially held together by:
thermonuclear fusion.
dark matter.
dark energy.
the Doppler Effect.
- Multiple ChoicePlease save your changes before editing any questions.
Our Milky Way, for instance, is in the _____________, a galaxy group about 10 million light-years across that also includes the Andromeda galaxy and its satellites.
Andromeda Galaxy
Trapezium
Local Group
Large Magellanic Cloud