Question | Answer |
The oval path on which our Earth cutss an imaginery slice through the solar system? | the plane of the elliptic |
The sun's brightest rays? | the zenith |
The Earths rotational axis? | 23.5 degrees |
The tilt of the Earth causes the Earth to have_________? | seasons |
Latitude: As far north as the Sun's zenith will ever reach | 23.5 N |
T of F: The sun's most direct rays reach Chilliwack once a year? | False |
As the dead of our winter, the sun's most direct rays are on the Tropic of _________? | Capricorn |
The theory that the sun is the center of the solar system. | Heliocentric model |
The early universe was mainly this element? | hydrogen |
Galaxies speeding away from each other is upport for this theory. | Big Bang |
The stretching of light waves is called _____________? | red shift |
red shifts supports what theory? | Big Bang |
Type of radiation that comes off black holes as they swallow other star. | Gamma Rays |
in ROYGBIV the least powerful light is this color. | Red |
A collection of gas and dust particles | nebula |
T or F: Planets with solid surfaces form farthest from the sun. | false |
T or F: Planets with gaseous surfaces form farthest from the sun. | true |
To be a planet, a space chunk must have its own __________________ around the sun. | orbital path |
T or F: Blue stars occupy the arms of a sprial galaxy. | true |
T or F: Yellow stars burn hotter than blue stars. | false |
T or F: Red stars are older than blue stars. | true |
At death, our sun will become a __________________? | white dwarf |
When our sun expands to engulf Mercury it will have a hydrogen, helium or carbon core? | helium |
When all the hydrogen in our sun is gone, the star will become a ____________________? | red giant |
After the stream of dust ours off a red giant, the star becomes a _________________? | white dwarf |
Streams of dust from red giants will eventually gravitate together to form a ________? | nebula |
Nearing the end of a 20 solar star mass will have a ______ core. | carbon |
T or F: A 20 solar mass stars will not contract after fusion of helium begins. | False |
T or F: A 20 solar mass stars will produce elements heavier than iron. | true |
The spectacular death off a high mass star. | supernova |
Spectacular star death only occurs in stars of solar mass ____ or higher. | 10 |
A neutron star that sends out a rotating beam of radio waves. | pulsar |
A 20 solar mass star will leave behind a ______. | neutron star |
A 50 solar mass star will leave behind a ______. | black hole |
Expansion and contraction cycles of high mass stars are important because they produce______________________. | elements |
T or F: Supernovas created the materials for solar systems. | true |
Stars orginnally formed from collasping________. | nebulas |
______________formed whe stars blasted out materials . | planets/ solar systems |
Today galaxies continue to move away or ________________. | red shift |