Historical Models
What do "Geo" and "Helio" mean?
Geo - Earth
Helio - Sun
Is the force of Gravity a push or a pull?
Pull
What are the areas of gas on the Sun that are cooler than the gas around them?
Sun Spots
How many planets are in our Solar System?
8
Who was the scientist who used the newly invented telescope to make discoveries that supported the heliocentric model?
Galileo
What does the word "Ellipse" mean?
An oval shape, not a perfect circle
What are the 2 things that affect gravitational strength?
Mass and Distance
What are the eruptions that occur when the loops in sunspot regions suddenly connect?
Solar Flares
True or False: Every planet in our Solar System has at least one moon.
FALSE
Who was the scientist who founded the heliocentric model?
Copernicus
Fill in the blank:
In the early __________s, the Polish astronomer Nicolas Copernicus developed a new model for the motions of the planets.
1500
Which planet in our Solar System has the strongest gravitational pull?
Jupiter
What is the process called that creates the Sun's energy?
Nuclear Fusion
What do we call a pattern of stars?
a Constellation
Which scientist found out that the orbits of the planets were ellipses?
Kepler
What kind of model did Ptolemy believe?
Geocentric - the planets moved on small circles that moved on bigger circles
True or False: Mercury has a stronger gravitational pull than Mars.
FALSE - Mars is larger, so it has a stronger gravitational pull
What are the 3 parts of the Sun's interior?
Core, Radiation Zone, and Convection Zone
List all the planets in our Solar System - IN ORDER.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
Who was the scientist who believed the planets moved on small circles, which moved on bigger circles?
Ptolemy
What did the Greeks originally think the solar system looked like?
that Earth was inside a rotating dome called a celestial sphere.
Who founded the theory of Gravity?
Isaac Newton
What are the 3 parts of the Sun's atmosphere?
The Photosphere, the Chromosphere, and the Corona
List 3 objects in the solar system other than the Sun and the planets.
asteroids, comets, meteors, meteorites, moons...
Who was the scientist who observed that Venus went through phases similar to the phases of Earth’s moon?
Galileo Galilei