Test 6/31 Flashcards
average distance between the Earth and the Sun
Astronomical Unit
how far light can travel in one year
light year
unit used to measure distances IN our solar system
AU
Astronomical Unit
unit used to measure distances OUTSIDE of our solar system
light year
what are the two motions of objects in space?
rotation
revolution
spinning of a planet/sun on axis
/
O
/
rotation
what an object moves in orbit around another object, it revolves around it
o
O
revolution
START with the cloud of gas and dust
which step is this of how the solar system is formed?
step 1
1gravity and 2gas pressure cause the cloud to pull in word making it smaller and it starts to spin
(which step is this of how the solar system is formed?)
step 2
nebula begins to flatten into a spinning pancake shape with a bulge at the center
(which step is this of how the solar system is formed?)
step 3
nebula continues to collapse, rotating cloud cause local regions to begin to pull closer together
(which step is this of how the solar system is formed?)
step 4
Proto son gets to begin enough it starts producing energy which makes it a full store. A solar system is BORN
(which step is this of how the solar system is formed?)
step 5
how do we know something is in our solar system?
orbits our sun
A group of millions/billions of stars. All-Stars orbit around a centerpoint
Galaxy
what is the name of our galaxy?
milky Way
in which layer of the sun can you SEE Energy moving out into space?
PHOTOsphere
layer of the sun where energy is produced
Core
two layers of the sun’s atmosphere
chromosphere, Corona
how do stars make energy?
nuclear fusion
what happened in nuclear fusion?
hydrogen turned into helium and releases energy
what types of Adams are involved in nuclear fusion?
hydrogen, helium, neutron, energy
how much percent of hydrogen is the sun made of?
75%
how much percent of helium is the sun made of?
24.5%
how much percent of “other” is the sun made of?
0.5%
what happens when the sun runs out of hydrogen?
The sun dies
what is surface temperature of our sun?
9,900°F (5500°C)
what are some spots and how long do they last?
cool, dark patches on the sun’s surface
1-2 weeks
magnetic storm on the sun
Solar flare
more than 99% of all of the mass in the solar system is in what?
Sun
how is a dwarf planet different from a planet?
they do not clear their orbits
how many dwarf planets are there and what are their names?
- 5
- Eris, Pluto, Makemake, haumea, ceves
what is the name of the man-made object that has traveled further than any other object?
Voyager-1
what are the 3 rules to be a planet?
orbits around sun
large enough that it’s own gravity pulls it into a sphere
large enough to clear away objects from its orbit
