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Science 7 - Space Science
Terms in this set (57)
Put in order the following words from smallest to largest: Sun, Asteroid, Earth
Asteroid, Earth, Sun
An AU (astronomical unit) is the average distance between ____________________.
the Earth and the Sun
Why is a comet sometimes bright?
Coma and tails reflects sunlight.
How would you describe the orbits of the planets, asteroids and comets?
All are ellipses, some more flattened than others.
How would you describe the inner planets?
rocky and terrestrial
A ____________ is an object that moves around a larger object.
NASA has sent several missions to explore _________.
Another name for rotation is ___________.
Which part of the electromagnetic spectrum do telescopes designed for the human eye use?
Why are telescopes typically placed on top of mountains?
to lessen the interference of Earth's atmosphere
When two types of spacecraft are used at the same time, this is called a _____________________.
A spacecraft that is dropped through a planet's atmosphere all the way to a crash landing on its surface is called a ___________.
A spacecraft that passes a planet briefly while on its trajectory is called a __________.
A spacecraft that circles a planet multiple times to obtain detailed pictures of the surface is called a __________.
A spacecraft that touches down on a planet and explores the surface is a ___________.
Scientists once thought that the dark areas of the moon were ____________.
Does the moon rotate?
During a solar eclipse involving the Earth, Sun, and Moon, which one is in the middle?
During a lunar eclipse involving the Earth, Sun, and Moon, which one is in the middle?
Sunlight shines EQUALLY on the northern and southern hemispheres with 12 hours of day and 12 hours of night during a solstice or an equinox?
What is the shortest day of sunlight in the northern hemisphere?
What is the longest day of sunlight in the northern hemisphere?
Describe the order of the Sun, Earth, and moon in a lunar eclipse. (The moonlight is completely blocked by the Earth's shadow.)
The Earth is between the Sun and the moon: Sun, Earth, moon
Describe the order of the Sun, Earth, and moon in a solar eclipse. (It appears that the moon is mostly blocking the sunlight.)
The moon is between the Sun and the Earth: Sun, moon, Earth
What does the moon control on Earth?
How many stars are there in our solar system?
What are all of the ways that stars are classified?
color, brightness, size, and temperature
What color star would have the highest temperature?
What color star would have the coolest temperature?
What is the life cycle of a VERY HIGH mass star?
nebula- giant star - supergiant - supernova - black hole
What is the life cycle of a HIGH mass star?
nebula - main sequence - supergiant - supernova - neutron star
What is the life cycle of a LOW mass star?
nebula - main sequence - giant star - white dwarf
What holds together stars in a galaxy?
An icy rock that orbits our sun and has a long tail caused by solar radiation is ___________.
A rock found on the surface of the Earth that fell from outer space is ____________.
When a rock enters our atmosphere and makes a bright streak of light in the sky, it is _____________.
When a space rock is moving in outer space, it is ___________.
This type of galaxy has no definite shape and is often small with few stars.
This type of galaxy has arms filled with stars and dust that curve away from the middle of the galaxy.
This type of galaxy is shaped like an egg or sphere and contains very old stars.
Because the moon has no atmosphere, there is no ________, ________, or __________.
rain, wind, erosion
Scientists think that Mars might support life because of the presence of __________.
A high mass star has two things it could become depending on how much mass it has. What are the two possibilities?
neutron star or black hole
How does Jupiter help protect Earth?
It pulls in space objects that could hit Earth.
Waxing means ______________________.
GROWING BIGGER, INCREASING (yucky way to remember this- wax in your ears increases)
Waning means ______________________.
GETTING SMALLER, DECREASING (opposite of waxing)
What shape is a crescent?
What is a gibbous shape?
More than half of a circle (but not a whole circle)
What does the New Moon look like?
The Moon's unilluminated side is facing the Earth. The Moon is not visible.
What does the Waxing (getting larger) Crescent Moon look like?
The Moon appears to be partly but less than one-half illuminated by direct sunlight. The fraction of the Moon's disk that is illuminated is increasing. A waxing crescent follows a new moon.
What does the First Quarter Moon look like?
One-half of the Moon appears to be illuminated by direct sunlight. The fraction of the Moon's disk that is illuminated is increasing.
What does the Waxing Gibbous Moon look like?
The Moon appears to be more than one-half but not fully illuminated by direct sunlight. The fraction of the Moon's disk that is illuminated is increasing.
What does the Full Moon look like?
The Moon's illuminated side is facing the Earth. The Moon appears to be completely illuminated by direct sunlight.
What does the Waning (getting smaller) Gibbous Moon look like?
The Moon appears to be more than one-half but not fully illuminated by direct sunlight. The fraction of the Moon's disk that is illuminated is decreasing.
What does the Last Quarter Moon look like?
One-half of the Moon appears to be illuminated by direct sunlight. The fraction of the Moon's disk that is illuminated is decreasing.
What does the Waning Crescent Moon look like?
The Moon appears to be partly but less than one-half illuminated by direct sunlight. The fraction of the Moon's disk that is illuminated is decreasing.
The seasons are caused by the angle of the Earth tilted on its axis towards the Sun. Be able to identify which image shows the Earth for each of the four seasons.
Remember that during the winter in the Northern Hemisphere, the North Pole points away from the sun and is in complete darkness.
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