History
The solar system model with the sun at the center
What is heliocentric?
A force of attraction between objects that is due to their masses.
What is gravity?
This star is at the center of our solar system.
What is the sun?
Mercury, Venus, Earth, Mars
What are the terrestrial planets?
A bright streak of light that occurs when this burns up in the Earth's atmosphere.
What is a meteor?
This scientist came up with three laws for planetary motion.
Who is Kepler?
Gravitational force increases as the mass of an object increases or as the distance between the two objects decreases
What is Newton's Law of Universal Gravitation?
The primary atomic reaction that takes place within the sun and converts hydrogen to helium atoms.
What is Uranus?
What are ice and rock?
This model of the solar system was supported by Aristotle and Ptolemy.
What is geocentric?
A force that makes a body follow along a curved path
What is centripetal force?
DOUBLE JEOPARDY!
This element makes up 25% of the composition of the sun
What is helium?
Jupiter and Saturn have many of these orbiting around them.
What are satellites (moons)?
This dwarf planet is found in the asteroid belt found between Mars and Jupiter.
What is Ceres?
This astronomer added onto the "wheels-on-wheels" system by adding the sun to the center instead.
Who is Copernicus?
these planets were formed last
What are the gas giant planets?
What is 11 years?
This planet has a longer rotation (length of day) than its revolution (length of year).
What is Venus?
Comets have this orbital shape
What is elliptical?
Galileo saw two different things through his modified telescope: four of Jupiter's moons, and ____________.
What are the phases of Venus?
This stage in the solar system formation came first
What is a solar nebula?
The rotation of a body in which different parts of a body have different periods of rotation.
What is differential rotation?
Only two planets in our solar system spin in a counterclockwise way. This is called ___________.
What is retrograde?
Pick the dwarf planet that doesn't belong:
Eris, Ceres, Makemake, Haumea, Ganymede
What is Ganymede?