1.
The position of Polaris cannot be used to find
A
the time
B
the Little Dipper
C
the direction of North
D
the latitude
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The position of Polaris cannot be used to find
the time
the Little Dipper
the direction of North
the latitude
Our nearest star neighbor in space, Alpha Centauri, is four light years from Earth. Why will it be difficult to visit?
There may be no planets near it.
It is very far away.
It is very bright and hot.
We are not sure exactly where it is.
In the southern sky, stars move
vertically
none of these
clockwise
counter-clockwise
How were constellations originally named and identified?
in groups of very distant, bright or old stars
by their location from Earths horizon
as people or animals they may have resembled
mathematically, with numbers and coordinates
How large is the Milky Way Galaxy?
It cannot be measured or compared.
It is very small when compared to the universe
It is the largest galaxy ever observed.
It takes up over half of the known universe.
Early astronomers thought that galaxies were single stars. Why was this mistake easy to make?
Galaxies are so far away that they look like a single star.
Galaxies are made of stars that you can only see one at a time.
Light from galaxies collects into a single beam.
Earth is small and galaxies are much larger.
Compared to our galaxy, how big is our solar system? The solar system is...
extremely tiny.
about one-tenth of the galaxy.
about one-third of the galaxy.
over half of the galaxy.
Why are distances in space often measured in light years?
The light year is a commonly used unit of measure.
Distances in space are so great that a large unit is needed.
Scientists always use metric units like light years.
Light years are easy to measure and understand.
Which stars do we always see during the year? Stars...
on the horizon
over the North Pole
in the larger constellations
inside other galaxies
Which of the following is a Zodiac constellation?
Canis Major
Gemini
Cassiopeia
Rigel
Which of the following is a constellation?
Betelgeuse
Sirius
Polaris
Orion
Which of the following correctly ranks astronomical objects by size, starting with the smallest?
Earth, sun, solar system, galaxy, universe
Sun, solar system, Earth, universe, galaxy
Universe, galaxy, solar system, Earth, sun
Solar system, Earth, sun, universe, galaxy
Which of the following best compares the amount of empty space in the universe to the amount of space galaxies occupy? Galaxies...
take up about half of the space.
take up most of the room in space.
are less than half but more than a fourth of space.
take up an extremely small amount of space.
Which is not true of the planets?
they move across the constellations
they are always brighter than the stars
they are located near the ecliptic
through a good telescope, they are not points of light
Which device is used to analyse the spectrum of stars?
camera
telescope
spectroscope
none of these
Which constellation can Venus be found in?
Aries
Orion
Aquila
Ursa Major
Which constellation can be seen from the North Pole?
Canis Major
Libra
Little Dipper
Capricorn
Which color has the shortest wavelength?
blue
yellow
red
none of these
What do the stars in a constellation have in common? The same...
brightness
distance from Earth
size
general direction from Earth
What are galaxies made of?
moons and planets
two stars orbiting each other
about one hundred stars
many millions of stars