The Solar System
What distance measurement do scientists use to measure distances within the solar system?
Astronomical Units
What happens in a heliocentric solar system?
The planets orbit around a star at the center of the solar system.
When distances of objects decreases, ......
Gravity decreases
What is absolute brightness?
How bright a star actually is.
What unit of measurement would you use to measure the Sun to Rigel?
Light Years
How did our solar system form?
From rocks being attracted to the sun's gravity, which then accumulated into planets.
What is a geocentric soar system?
A solar system with Earth at the center.
Gravity
What is the hottest and most dense part of the sun?
The core
What is the universe made of?
Billions of solar systems, stars, and galaxies
What is the difference between terrestrial planets and gaseous planets?
Terrestrial planets are made of rock and gaseous planets are made of gas.
Why do gas giants have more moons than terrestrial planets?
Their gravity is able to hold onto more moons because they are bigger than terrestrial planets.
How many galaxies are there in the Universe?
Billions of glaxies
What is the order of star temperature from coolest to hottest?
Red, orange, yellow, white, blue.
Which planet would have the highest surface temperature?
Venus
list the planets in order from closest to the sun to farthest
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
Why would NASA send a probe to the gas giant planets instead of sending people?
Because the distance is too far for people to survive.
What would your address be is you were to send an alien a letter.
Earth, solar system, galaxy
What do scientists use to classify Stars?
Size, temperature, and brightness.
Does the sun rotate?
No, the Earth rotates around the sun
Which planet has the longest orbit around the sun?
Neptune
Why doesn't Earth get his by many meteors as other planets or moons?
Because the Earth's atmosphere causes most things to burn before they hit the ground.
If Brian weighs 100 pounds on Earth, would he weigh more or less on Jupiter? Explain.
More, because the gravity on Jupiter is greater on Jupiter than on Earth.
How would a scientists determine the absolute brightness of a star?
The scientist would use the distance from Earth the star is and the apparent magnitude of the star.
During convection, after the hot gas rises, what happens to it?
It sinks back down.