Science Astronomy Test Quiz
Astronomy is a science that studies everything outside of the earth's atmosphere, such as planets, stars, asteroids, galaxies and the properties and relationships of those celestial bodies. Astronomers base their studies on research and observation. Test out what you have understood so far by taking this quiz. All the best!
- 1.
What are the forms of electromagnetic radiation?
- A.
Surface, temperatures, magnitude
- B.
Infrared, ultraviolet, and visible
- C.
Radio, light, xrays, gamma, microwave
- D.
Continuous, absorption, and emmision
- E.
Gamma, x-rays, ultraviolet, visible, infrared, microwaves, radio.
Correct Answer
E. Gamma, x-rays, ultraviolet, visible, infrared, microwaves, radio.Explanation
The correct answer is "gamma, x-rays, ultraviolet, visible, infrared, microwaves, radio." This answer lists the different forms of electromagnetic radiation, ranging from high-energy gamma rays and x-rays to low-energy radio waves. These forms of radiation cover the entire electromagnetic spectrum, with each type having its own unique properties and uses.Rate this question:
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- 2.
What is the difference between absolute and apparent magnitude?
- A.
Absolute magnitude shows how far away a planet actually is, and apparent magnitude shows how far a planet might be from earth
- B.
Absolute magnitude shows how bright a star is, and apparent magnitude shows how bright it actually is
- C.
Absolute, shows how bright a star actually is, and apparent magnitude shows how bright a star might be
- D.
Absolute magnitude shows how far away a star actually is, and apparent magnitude shows how far away a star is
- E.
Absolute magnitude shows how bright a planet actually is, and apparent magnitude shows how bright a planet is
Correct Answer
C. Absolute, shows how bright a star actually is, and apparent magnitude shows how bright a star might beExplanation
Absolute magnitude is a measure of the intrinsic brightness of a star, independent of its distance from Earth. It represents how bright a star would appear if it were located at a standard distance of 10 parsecs (32.6 light-years) from Earth. On the other hand, apparent magnitude is a measure of how bright a star appears from Earth. It takes into account both the intrinsic brightness of the star and its distance from Earth. Therefore, the correct answer is that absolute magnitude shows how bright a star actually is, while apparent magnitude shows how bright a star might be depending on its distance from Earth.Rate this question:
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- 3.
The next stage in our sun's life is:
- A.
Main sequence
- B.
Protostar
- C.
Nebula
- D.
Red Giant
- E.
Super giant
Correct Answer
D. Red GiantExplanation
As a star exhausts its hydrogen fuel, it expands and becomes a Red Giant. This phase occurs after the main sequence stage in a star's life. During this stage, the star's core contracts while its outer layers expand, causing the star to become larger and cooler. The expansion of the outer layers can lead to the engulfment of nearby planets. Eventually, the star will shed its outer layers and form a planetary nebula, marking the end of its life as a Red Giant.Rate this question:
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- 4.
What force is responsible for the formation of a star?
- A.
Surface temperatures, absolute magnitude
- B.
Gravity, friction
- C.
Radio, microwave, infrared, ultraviolet, visible
- D.
Protostar
- E.
Hydrogen, oxygen
Correct Answer
B. Gravity, frictionExplanation
Gravity is responsible for the formation of a star. Gravity causes the collapse of a cloud of gas and dust, creating a dense core known as a protostar. As the protostar continues to collapse under its own gravity, friction between particles in the core generates heat, eventually leading to nuclear fusion and the ignition of a star.Rate this question:
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- 5.
What is a nebula?
- A.
A cold, dark, and dense cloud
- B.
A hole that sucks up everything near it.
- C.
A small planet that gives off red shifts
- D.
A warm bright cloud
- E.
Outerspace
Correct Answer
A. A cold, dark, and dense cloudExplanation
A nebula is a cold, dark, and dense cloud in space. Nebulas are made up of gas, dust, and other particles. They are often the birthplaces of stars and planetary systems. The particles in a nebula can come together under gravity to form new stars or planets. Nebulas can vary in size and shape, and they can emit light or appear dark depending on the type of particles present.Rate this question:
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- 6.
What will be the final stage in our sun"s life cycle?
- A.
Main sequence
- B.
White dwarf
- C.
Red Giant
- D.
Super Red giant
- E.
Black dwarf
Correct Answer
E. Black dwarfExplanation
The correct answer is Black dwarf. In the final stage of the sun's life cycle, after it has gone through the main sequence, red giant, and super red giant phases, it will eventually cool down and become a black dwarf. A black dwarf is a theoretical celestial object that has cooled down to the point where it no longer emits any visible light or heat. However, it is important to note that black dwarfs have not yet been observed, as the process of a star becoming a black dwarf takes an extremely long time, much longer than the current age of the universe.Rate this question:
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- 7.
What are the types of electromagnetic radiation?
- A.
Surface, temperatures, magnitude
- B.
Continuous, absorption, and emmision
- C.
Infrared, ultraviolet, and visible
- D.
Gamma, x-rays, ultraviolet, visible, infrared, microwaves, radio.
- E.
Radio, light, xrays, gamma, microwave
Correct Answer
D. Gamma, x-rays, ultraviolet, visible, infrared, microwaves, radio.Explanation
The correct answer includes a comprehensive list of the types of electromagnetic radiation. It includes gamma rays, x-rays, ultraviolet, visible light, infrared, microwaves, and radio waves. These types of radiation span a wide range of frequencies and energies, with gamma rays being the most energetic and radio waves being the least energetic. Each type of radiation has unique properties and uses, ranging from medical imaging with x-rays to communication with radio waves.Rate this question:
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- 8.
Which star colors have the highest surface temp?
- A.
Red
- B.
Green
- C.
Blue
- D.
Orange
- E.
Yellow
Correct Answer
C. BlueExplanation
Blue stars have the highest surface temperature compared to other star colors. This is because the color of a star is directly related to its surface temperature. Blue stars are hotter than red, green, orange, and yellow stars. The surface temperature of a star determines its color, with hotter stars emitting more blue light and cooler stars emitting more red light. Therefore, blue stars have the highest surface temperature among the given options.Rate this question:
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- 9.
What does a prism do?
- A.
Gamma rays
- B.
Spectral line
- C.
Creates absorption spectrum
- D.
Creates continuous spectrum
Correct Answer
D. Creates continuous spectrumExplanation
A prism creates a continuous spectrum. When white light passes through a prism, it gets refracted and separates into its component colors, forming a continuous spectrum. This spectrum consists of all the colors of the rainbow, from red to violet, with each color blending seamlessly into the next. This phenomenon occurs because different wavelengths of light bend at different angles as they pass through the prism, causing them to spread out and create the continuous spectrum.Rate this question:
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- 10.
What is a black hole?
- A.
Sucks up everything that gets near it
- B.
Motional gravity pull
- C.
A spinning tornado in space
- D.
A worm hole
- E.
Time warp
Correct Answer
B. Motional gravity pullExplanation
A black hole is a region in space with extremely strong gravitational forces that pulls everything, including light, towards it. This intense gravitational pull is often described as a "motional gravity pull" because it causes any nearby objects to be sucked up or pulled towards the black hole. The other options mentioned, such as a spinning tornado in space, a wormhole, or a time warp, do not accurately describe the nature of a black hole.Rate this question:
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- 11.
What does the Doppler Effect tell us about things in space?
- A.
Universe is expanding
- B.
Universe is going to pop
- C.
Universe is contracting
- D.
Universe is getting closer together
- E.
How close all the planets are getting
Correct Answer
A. Universe is expandingExplanation
The Doppler Effect is a phenomenon that occurs when there is a change in frequency or wavelength of a wave as observed by an observer moving relative to the source of the wave. In the context of space, the Doppler Effect tells us that the universe is expanding. This is because the light from distant galaxies appears to be redshifted, meaning that the wavelengths of the light are stretched out and shifted towards the red end of the spectrum. This indicates that the galaxies are moving away from us, providing evidence for the expansion of the universe.Rate this question:
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- 12.
What do the Doppler Effect tell us about things in space?
- A.
Moves faster
- B.
Its expanding
- C.
Moves slowly
- D.
Its contracting
- E.
The planets shrink
Correct Answer
A. Moves fasterExplanation
The Doppler Effect tells us that things in space move faster. The Doppler Effect is the change in frequency or wavelength of a wave as an observer moves relative to the source of the wave. In the context of space, this means that objects that are moving away from us in space will have their wavelengths stretched, resulting in a shift towards the red end of the spectrum, known as redshift. This redshift indicates that the objects are moving away from us at increasing speeds, suggesting that they are moving faster.Rate this question:
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- 13.
What is a reflecting telescope and how is it different from a refracting one?
- A.
Reflecting telescope bounces off of things, while refracting bends light
- B.
Reflecting telescope goes througb space and back
- C.
Reflecting Telescopes bend and refracts light, while refracting uses a mirror
- D.
Reflecting telescope uses a mirror, while refracting bends light
Correct Answer
D. Reflecting telescope uses a mirror, while refracting bends lightExplanation
A reflecting telescope uses a mirror to gather and focus light, while a refracting telescope uses a lens to bend and focus light. This is the key difference between the two types of telescopes. The mirror in a reflecting telescope reflects and focuses the light onto a secondary mirror or a detector, allowing for observation. On the other hand, the lens in a refracting telescope bends the light as it passes through, causing it to converge and form an image.Rate this question:
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- 14.
Helium is fused to what in the core of red giants?
- A.
Hydrogen
- B.
Oxygen
- C.
Gravity
- D.
Main sequence
Correct Answer
A. HydrogenExplanation
In the core of red giants, helium is fused into hydrogen. This fusion process, known as the triple-alpha process, occurs at extremely high temperatures and pressures. It involves the fusion of three helium nuclei to form a single helium nucleus, releasing a large amount of energy in the process. This fusion reaction sustains the energy production in red giants and is responsible for their bright and expansive nature.Rate this question:
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- 15.
What makes up 90% of the HR diagram?
- A.
Gravity
- B.
Protostar
- C.
Main sequence
- D.
Planets
- E.
Space
Correct Answer
C. Main sequenceExplanation
The main sequence makes up 90% of the HR diagram. The HR diagram is a graph that shows the relationship between the luminosity (brightness) and temperature of stars. The main sequence is a diagonal band on the HR diagram that represents stars in the stable phase of their lives, where they are fusing hydrogen into helium in their cores. This phase is the longest and most common phase in a star's life, which is why it makes up the majority of the HR diagram.Rate this question:
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- 16.
What is a light year?
- A.
Distance light travels in 5 minutes
- B.
Distance light travels in a second
- C.
Distance to get to a planet
- D.
Distance light travels in a year
- E.
Distance light travels a round earth
Correct Answer
D. Distance light travels in a yearExplanation
A light year is the distance that light travels in one year. It is a unit of measurement used to describe vast distances in space. Since light travels at a speed of approximately 299,792 kilometers per second, multiplying this speed by the number of seconds in a year gives us the distance covered by light in one year.Rate this question:
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- 17.
What is Chromatic aberration?
- A.
Chemical energy providing colors
- B.
Different colors is focused at different places
- C.
Light rays bendining, or retracting
Correct Answer
B. Different colors is focused at different placesExplanation
Chromatic aberration refers to the phenomenon where different colors of light are focused at different points. This occurs due to the bending or refraction of light rays as they pass through a lens. As a result, the image formed may have color fringes or blurring around the edges, especially in high-contrast areas. This optical imperfection can be observed in various optical systems, such as cameras and telescopes.Rate this question:
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- 18.
What do red shifts in our universe indicate?
- A.
Obects move towards eachother
- B.
Obects move away from eachother
- C.
Colder planets
- D.
Warmer planets
Correct Answer
B. Obects move away from eachotherExplanation
The red shifts in our universe indicate that objects are moving away from each other. This is based on the observation that the light emitted by distant galaxies appears to be shifted towards longer wavelengths, shifting towards the red end of the spectrum. This phenomenon is known as redshift and is explained by the expansion of the universe. As the universe expands, galaxies move farther apart, causing the light from these galaxies to stretch and appear more redshifted.Rate this question:
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- 19.
Who was the first dude to use a telescope?
- A.
Brahe
- B.
Kepler
- C.
Galileo
- D.
Hipparchus
- E.
Eretosthenes
Correct Answer
C. GalileoExplanation
Galileo was the first person to use a telescope. He made significant astronomical observations and discoveries using his telescope, including the observation of the moons of Jupiter and the phases of Venus. His use of the telescope revolutionized the field of astronomy and laid the foundation for our understanding of the universe.Rate this question:
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- 20.
What happens to wavelengths in Doppler effect?
- A.
It get warmer when its really close and colder when its farther away
- B.
It gets colder when its really close and colder when its farther away
- C.
Objects move towards or away from an object
- D.
Objects move towards other objects
- E.
Obects move away from other objects
Correct Answer
C. Objects move towards or away from an objectExplanation
The Doppler effect is a phenomenon where there is a change in the frequency and wavelength of a wave when the source of the wave is moving relative to the observer. When an object is moving towards the observer, the wavelength of the wave appears shorter, resulting in a higher frequency. Conversely, when an object is moving away from the observer, the wavelength appears longer, resulting in a lower frequency. Therefore, the correct answer is "Objects move towards or away from an object."Rate this question:
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- 21.
How do you change the magnification in a telescope?
- A.
Changin the quality
- B.
Use a better telescope
- C.
Turning the knob
- D.
Changing the eyepiece
Correct Answer
D. Changing the eyepieceExplanation
To change the magnification in a telescope, you need to change the eyepiece. The eyepiece is the part of the telescope that you look through, and it determines the magnification power. By swapping out the eyepiece with one that has a different focal length, you can increase or decrease the magnification of the telescope. This allows you to adjust the level of detail and zoom in on objects in the sky.Rate this question:
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Current Version
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Mar 20, 2023Quiz Edited by
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Sep 24, 2009Quiz Created by
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