PRAXIS SCIENCE 5905 COMPLETE STUDY
GUIDE AND GENERAL SCIENCE CONTENT
REVIEW 2026
◉ Earth is believed to be _________________________________.
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
Answer: Earth's Magnetic Field
◉ charged particles escape from the sun's gravitational pull
Answer: Solar Wind
◉ What would be most different about an object on Mars than
Earth?
Answer: Weight
◉ What are the four inner planets: solid, liquid, or gas?
Answer: Solid
◉ What are the four outer planets: solid, liquid, or gas?
,Answer: Gas (MVEM(Mars)JSUN)
◉ ________________ is the left over remains of a star after it explodes
Answer: Super Nova
◉ _________________ is the study of space
Answer: Astronomy
◉ ____________ is the star at the center of Earth's solar system
Answer: Sun
◉ What is the sun made of?
Answer: Hydrogen and Helium
◉ How many Earth's could fit into the Sun?
Answer: 109
◉ Define Nuclear Fusion.
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?
,Answer: True
◉ ______________________ is how heat goes from sun to Earth.
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.
Answer: Asteroid Belt
◉ Our solar system is part of a bigger star system called a
__________________.
Answer: Galaxy
◉ A _________________ is made up of stars, dust, and gas.
Answer: Galaxy
◉ The galaxy that is home to Earth is known as the
___________________________.
Answer: Milky Way
◉ The planet that is closest to Earth's size is _______________.
Answer: Venus
, ◉ A _______________ is mostly made of ice, dust, and gas.
Answer: Comet
◉ A________________ is a light flashing in the sky from space.
Answer: Meteoroid
◉ What will happen if you drop a ball from space?
Answer: It will fall slower and take longer
◉ How long will it be before we see a star that explodes 15 light
years away?
Answer: 15 years
◉ The planet that orbits closer to Earth
Answer: Venus
◉ The planet that has the shortest days
Answer: Jupiter
◉ The terrestrial planet
Answer: Mercury
GUIDE AND GENERAL SCIENCE CONTENT
REVIEW 2026
◉ Earth is believed to be _________________________________.
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
Answer: Earth's Magnetic Field
◉ charged particles escape from the sun's gravitational pull
Answer: Solar Wind
◉ What would be most different about an object on Mars than
Earth?
Answer: Weight
◉ What are the four inner planets: solid, liquid, or gas?
Answer: Solid
◉ What are the four outer planets: solid, liquid, or gas?
,Answer: Gas (MVEM(Mars)JSUN)
◉ ________________ is the left over remains of a star after it explodes
Answer: Super Nova
◉ _________________ is the study of space
Answer: Astronomy
◉ ____________ is the star at the center of Earth's solar system
Answer: Sun
◉ What is the sun made of?
Answer: Hydrogen and Helium
◉ How many Earth's could fit into the Sun?
Answer: 109
◉ Define Nuclear Fusion.
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?
,Answer: True
◉ ______________________ is how heat goes from sun to Earth.
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.
Answer: Asteroid Belt
◉ Our solar system is part of a bigger star system called a
__________________.
Answer: Galaxy
◉ A _________________ is made up of stars, dust, and gas.
Answer: Galaxy
◉ The galaxy that is home to Earth is known as the
___________________________.
Answer: Milky Way
◉ The planet that is closest to Earth's size is _______________.
Answer: Venus
, ◉ A _______________ is mostly made of ice, dust, and gas.
Answer: Comet
◉ A________________ is a light flashing in the sky from space.
Answer: Meteoroid
◉ What will happen if you drop a ball from space?
Answer: It will fall slower and take longer
◉ How long will it be before we see a star that explodes 15 light
years away?
Answer: 15 years
◉ The planet that orbits closer to Earth
Answer: Venus
◉ The planet that has the shortest days
Answer: Jupiter
◉ The terrestrial planet
Answer: Mercury
