Stars
What type of star is our sun?
Main sequence star aka Yellow dwarf
What is our solar system defined as?
The sun and all the objects held in by its gravity.
What is the heliocentric theory?
The heliocentric theory is that the sun is the center of the Universe.
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The inner planets are also known as what?
the terrestrial "rocky" planets
Stars shine bright because they convert hydrogen into....?
Helium
What separates the inner from the outer planets?
the asteroid belt
What is a neutron star?
A neutron star is a the core left over from a supernova. It is about 4 times the mass of the sun.
Which planet is closest to the sun?
Mercury
The outer planets are known as the what?
Gas giants
What is the center of the sun called?
the core
Name all eight planets in order.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
What is the geocentric theory?
Earth as the center of our universe
What is the last inner planet?
Mars
What is the difference between a meteor and meteorite?
Meteor- glowing rock in the atmosphere
Meteorite is what a meteor is called once it reaches Earth's surface
The sun's outermost layer is called....?
The corona
What is found on the outside of Neptune?
the Kuiper belt
Who proposed the theory that Earth is the center of the revolving planets and stars?
Ptolemy
How long does it take for Earth to make 1 revolution around the sun?
365 days
Which planet is known for its big red spot?
Jupiter
What is the layer of the sun's atmosphere that gives off visible light?
the photosphere
Who proved the orbit of each planet to be elliptical or oval shape
Johannes Kepler
Who proposed that the Earth and all the planets revolve around the Sun?
Nicolaus Copernicus
How many times greater in Venus temperature compared to Earth.
90 times greater pressure.
Our old planet Pluto is now known as a...?
dwarf planet