a model that assumes the sun an other stars moved around the Earth. Geo means "Earth." Geocentric means "Earth-centered"
15
What is the heliocentric model?
Model where the Sun is the center of the solar system, with the planets orbiting the Sun and the stars remaining stationary (not moving)
15
How did scientists come up with the heliocentric model?
From the invention of the telescope in the 1600s that allowed scientists such as Galileo Galilei to use measurements and demonstrate the heliocentric model.
15
What does our solar system consist of?
Sun, plants, dwarf planets (smaller planets), moons, asteroids, comets, meteoroids, and a host of frozen worlds beyond Neptune.
15
How does the sun's mass effect the solar system?
The sun has enough mass that its gravitational pull holds the planets and other objects in the solar system in orbit.
15
Does the Sun rotate, or spin, about its axis like all the other stars located in the Milky Way galaxy?
Is a pig's hiney pork? Sure it does!
15
An extremely hot, dense mass of gases.
Star
15
What happens as the dense mass of gases that make up a star burn?
They give off visible light as well as other forms of energy and charged particles.
15
Where does most of the energy, including light and heat, come from that reaches our planet?
Sun
15
Medium-sized, most massive object in our solar system?
Sun
15
How does gravitational attraction between celestial bodies decrease?
if the bodies are smaller size and greater distance
15
How does gravitational attraction between celestial bodies increase?
if the bodies are greater size and smaller distance
15
Explain the effect of gravity on the sun?
The sun is pulled by massive gravitational forces of the center of the Milky Way, which cause stars and stellar systems to orbit around the center of the galaxy
15
What is the size of the sun compared to Earth?
The sun's diameter (the distance around it) is 100 times bigger than Earth's.
15
Name the 4 inner planets (closest to the sun) and give a brief description.
Mercury, Venus, Earth, and Mars - small and rocky
15
Name the planets in order from the sun.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune
