Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
39 Cards in this Set
- Front
- Back
|
Where in space are stars born? |
Nebula |
|
|
What is a sunspot |
a region on the surface of the sun that is cooler than surrounding areas |
|
|
How long is 1 moon cycle |
about 27 days |
|
|
Why is a moon phase lit? |
A moon phase is lit because the sun illuminates the half of the moon that is directly facing the earth |
|
|
What gases make up the sun |
hydrogen (73%) and helium (25%), while the rest is made up of carbon, oxygen and iron. |
|
|
Rotation |
planet rotating about there axis counterclockwise |
|
|
revolution |
planets revolve around the sun conterclockwise |
|
|
how does the produce energy |
nuclear fusion |
|
|
What is an eclipse? |
When one celestial object passes directly in front of another celestial object, |
|
|
Star life cycle |
Stellar Nebula, Average star, red giant, planetary nebula, white dwarf, neutron star, black hole, supernova, red giant, massive star |
|
|
Describe Solar Eclipse |
Shadow of the moon falls on the earth Moon is between the earth and sun Can only happen during new moon |
|
|
Describe Lunar eclipse |
The full moon passes through umbra portion of earths shadow Earth is between sun and moon |
|
|
What are the types of galaxies |
Spiral, Elliptical, Irregular |
|
|
What type of galaxy are we in |
Spiral |
|
|
What is the big band theory |
The finding that Distant galaxies are moving away from the Milky Way galaxy (the Universe is expanding). |
|
|
3 things that classify a planet as a planet |
Orbits a star Spherical Does not share its orbit with another object |
|
|
What asteroids |
small rocky objects found in the asteroid belt |
|
|
comet |
chunk of frozen matter that travels in a very long orbit around the sun |
|
|
meteoroid |
lump of rock or metal that is trapped by earths gravity and pulled down through earth's atmosphere that largest are from the asteroid belt small ones comets debris |
|
|
meteor |
a meteoroid in earths atmosphere that has become hot and vaporized producing a light streak across the sky |
|
|
meteorite |
an object large enough to hit the Earth. |
|
|
order they follow in |
comet, asteroid, meteoroid, meteor, meteorite |
|
|
what is an near earth object |
A near-Earth object is any small Solar System body whose orbit brings it to proximity with Earth. |
|
|
what helps track near earth objects |
Planetary Radar |
|
|
what are 3 benefits of of space exploration |
education(Knowledge of space). jobs, Communications, weather satellites |
|
|
what are 3 hazards of space explorations |
Money, Dangerous for humans, etc |
|
|
what are constellations |
constellations are a group of stars that form a pattern |
|
|
what were constellations used for thousands of years ago |
as a guide Early astronomers realized that some constellations, such as the Big Dipper, were only seen in the northern part of the sky |
|
|
red shift |
when object moves away from observer(wavelength decreases) |
|
|
blue shift |
when the object moves closer to the observer(wavelength increases) |
|
|
a Canadian contribution to space technology |
Canada's contribution to the ISS is the Mobile Servicing System, a sophisticated robotics suite that plays a critical role in the Station's operations and general upkeep. it moves equipment and supplies around the station, supports astronauts working in space, and services instruments and other payloads attached to the ISS and is used for external maintenance. |
|
|
Characteristics of Androdema |
The Andromeda constellation is an autumn constellation, it’s visible in the Northern Hemisphere from June through February.The brightest star in the constellation is Alpha Andromeda. The three main stars in Andromeda are alpha, beta and gamma. |
|
|
what colour are the hottest stars |
blue |
|
|
aurora borealis |
An aurora, is a natural light display in the Earth's sky, predominantly seen in the high-latitude regions. Auroras are the result of disturbances in the magnetosphere caused by solar wind. |
|
|
Black hole |
A black hole is a region of spacetime exhibiting gravitational acceleration so strong that nothing—no particles or even electromagnetic radiation such as light—can escape from it. |
|
|
Galaxy |
A galaxy is a collection of stars, gas, dust, and planets held together by gravity. |
|
|
Nebula |
When a star forms, such as the Sun, its hot core remains surrounded by gas & dust (called a nebula) |
|
|
Universe |
The Universe is all of space and time and their contents, including planets, stars, galaxies, |
|
|
luminosity |
Luminosity is the measure of a star’s brightness. It is the total amount of energy produced by the star everysecond. Sun’s luminosity is 1. |
