Praxis Science 5905 Study Guide
_____________________ is the study of the history of life on Earth. - CORRECT
ANSWER-Paleontology
Earth is believed to be _________________________________. - CORRECT
ANSWER-4.5 billion years old
protects Earth from harmful solar wind particles; responsible for the Northern
Lights (Aurora Borealis); lies deep within the Earth - CORRECT
ANSWER-Earth's Magnetic Field
charged particles escape from the sun's gravitational pull - CORRECT
ANSWER-Solar Wind
What would be most different about an object on Mars than Earth? - CORRECT
ANSWER-Weight
What are the four inner planets: solid, liquid, or gas? - CORRECT
ANSWER-Solid
What are the four outer planets: solid, liquid, or gas? - CORRECT ANSWER-Gas
(MVEM(Mars)JSUN)
________________ is the left over remains of a star after it explodes -
CORRECT ANSWER-Super Nova
_________________ is the study of space - CORRECT ANSWER-Astronomy
____________ is the star at the center of Earth's solar system - CORRECT
ANSWER-Sun
What is the sun made of? - CORRECT ANSWER-Hydrogen and Helium
How many Earth's could fit into the Sun? - CORRECT ANSWER-109
,Define Nuclear Fusion. - CORRECT ANSWER-how the sun produces heat and
shines; when lighter elements become heavier
True or False: Earth is much closer to the sun than other planets? - CORRECT
ANSWER-True
______________________ is how heat goes from sun to Earth. - CORRECT
ANSWER-Radiation
Includes asteroids and comets which are small rocky or icy objects that orbit the
sun and are clustered into the _______________ ________________ and found
between the orbits of Mars and Jupiter. - CORRECT ANSWER-Asteroid Belt
Our solar system is part of a bigger star system called a __________________. -
CORRECT ANSWER-Galaxy
A _________________ is made up of stars, dust, and gas. - CORRECT
ANSWER-Galaxy
The galaxy that is home to Earth is known as the
___________________________. - CORRECT ANSWER-Milky Way
The planet that is closest to Earth's size is _______________. - CORRECT
ANSWER-Venus
A _______________ is mostly made of ice, dust, and gas. - CORRECT
ANSWER-Comet
A________________ is a light flashing in the sky from space. - CORRECT
ANSWER-Meteoroid
What will happen if you drop a ball from space? - CORRECT ANSWER-It will fall
slower and take longer
How long will it be before we see a star that explodes 15 light years away? -
CORRECT ANSWER-15 years
, The planet that orbits closer to Earth - CORRECT ANSWER-Venus
The planet that has the shortest days - CORRECT ANSWER-Jupiter
The terrestrial planet - CORRECT ANSWER-Mercury
The planet with the most abnormal tilt on the axis - CORRECT ANSWER-Uranus
What causes Earth's days and times to differ? - CORRECT ANSWER-The tilt of
Earth's axis
What does fossil fuels and volcanic activity do? - CORRECT ANSWER-It
releases carbon dioxide into Earth's atmosphere
What is the largest planet that is farthest from the sun? - CORRECT
ANSWER-Neptune
What causes the color of Neptune? - CORRECT ANSWER-Methane
True or False: Neptune has the shortest orbit around the sun? - CORRECT
ANSWER-False
What two planets are known as the gas giants? - CORRECT ANSWER-Saturn
and Jupiter
What other planet is known as an "ice giant" along with Neptune? - CORRECT
ANSWER-Uranus
How many days does it take for Earth to rotate on its axis? - CORRECT
ANSWER-one
How long does it take for Earth to revolve around the sun? - CORRECT
ANSWER-one year
What causes seasons on Earth? - CORRECT ANSWER-Earth's tilt
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