Quiz 1
Synodic month which is period of time from new moon to new moon takes about
29.5 days
The distance from earth to sun is called an
Astronomical unit
The geocentric hypthesis is a theory that places the Earth as the center of the Universe
True
The time period from one new moon to the next new moon is called
synodic month
The inner core is?
the solid, dense center of our planet that extends from the bottom of the outer core to the center of the Earth
The mean distance from sun to earth is approximately
1 astronomical unit
Approximately how old is the universe
14 billion years
How many planets are in our solar system?
8
Meteoroid
A chunk of rock or dust in space
meteorite
A meteoroid that has hit earth's surface.
meteor
A streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere.
What is the accepted theory about the origin of the moon
A very large object hit Earth, and the Moon was formed from ejected material.
The brightness of a star at a defined standard distance is
Absolute magnitude
Which of the following colors from starlight is from the hottest star?
Blue-white
The lithosphere includes
Crust and uppermost, rigid mantle
Galileo used a telescope to observe the phases of Jupiter.
False
The earth is largely protected from the solar winds by its gravitational force.
False
Which of the following hypothesis better explain the Earth-Sun-Planets in our solar system
Heliocentric Orbit Hypothesis
Which of the following is mostly likely found in Jupiter?
Hydrogen
What is the largest planet in the solar system?
Jupiter
The following planets are all made up of gas:
Jupiter, Saturn, Uranus, and Neptune
After first quarter, moon moved to its full phase then to the
Last quarter
Of the planets, Jupiter's size is most closest to
Saturn
Mantle made of?
Silicon, oxygen, Iron-Magnesium
Neptune's size is most closest to
Uranus
Of the inner planets of the solar system, Earth's size is most similar to:
Venus
The belt of asteroids between Mars and Jupiter is probably
clumps of matter that condensed from the accretion disk but never got together as a planet
Geologists believe the source of the earth's magnetic field may be in the
core
Crust is made of
granite and basalt
A galaxy is held together by
gravitational attraction
The two most abundant elements in the sun are
hydrogen and helium
Core is made of
iron and nickel
Meteorites are classified into three categories:
irons, stones, and stony-irons
Which zone of the earth is made up of liquid iron?
outer core
What color is the coolest star?
red
The spinning of a planet on its axis is called
rotation
The consistent tilt and the orientation of its axis as earth moves around its orbit is responsible for
seasons
As moon moved from the new phase in its orbit around earth, we will see half the lighted surface
First quarter
When moon is on the dark side of earth, we see entire illuminated half of the moon
Full moon (full phase)
The solar system is held together by
Gravitational attraction
Meteorites are classified into all of the following groups except:
Lead
When did the last magnetic reversal occur?
Less than 1 million years ago
Which is the best explanation of magnetic force?
Magnetism is the force exerted by an electric current
Of the planets, Mercury's size is most closest to
Mars
What is the closest planet to the sun?
Mercury
What is the smallest planet in the solar system?
Mercury
These three planets are made up of rock:
Mercury, Venus, and Mars
Remnants of comets and asteroids found in space are called
Meteroids
Furthest planet from the sun is?
Neptune
What is the outermost planet
Neptune
A total solar eclipse can only occur only during the moon phase of
New moon
The moon is positioned between Earth and the Sun. This phase is the
New moon
The scientists who first proposed that the sun was at the center of the planetary system was
Nicolaus Copernicus
Last magnetic reversal
Occurred 780,000 years ago
Galileo's greatest contribution to the new science was
The confirmation of Copernican theory
What is the moon formation theory?
The giant impact hypothesis or the Big Splash
The higher the brightness
The he higher the luminosity
According to the data shown in the figure, what was Earth's magnetic polarity like 5 million years ago?
The reverse of today
What is the heliocentric theory?
The sun is the center of the solar system
A geomagnetic reversal is a change in Earth's magnetic field such that the positions of magnetic north and magnetic south are interchanged
True
What did Galileo use a telescope to observe the phases of?
Venus
In the Southern Hemisphere, the South Pole points toward the Sun during the
Winter solstice
A compass reads the Earth's magnetic field. Does a compass function the same when south of the earth's equator as when north of the equator?
Yes, it will always point to magnetic south.
The outer core is?
liquid or molten
The total amount of energy radiated from the surface of a star into space each second is
luminosity
A small body from space that falls on the surface of Earth is a
meteorite