Space Environment
Outer space is almost a _____. This word is defined as a space that is empty, meaning the space has no, or virtually no, molecules
Vacuum
This is the distance it takes light to travel in a year
Light Year
What is the closest star to us on Earth
The Sun
True or False: The Earth’s magnetic force is the strongest at its equator
False (it's strongest at the poles)
________ is a flow of particles that comes off the sun
Solar Winds
True or False: there is no gravity in space
False
This is the region of space between the stars
Interstellar Space
What is the galaxy shape of the Milky Way Galaxy
Spiral
Name 4 types of electromagnetic radiation
Ex. Radio Waves, Microwaves, Infrared, Visible Light, Ultraviolet, X-rays, Gamma rays
Small or very little gravity is called _____
Microgravity
____ is the point at which all molecules stop moving or have the least amount of energy
Absolute Zero
This is the region of space between the center of the Sun to the orbit of its outermost planet
Interplanetary Space
What are the three main shapes of a galaxy?
Elliptical, Spiral, Irregular
This is the region around a planet dominated by the planet's magnetic field
Magnetosphere
True or False: The Aurora Australis occurs in the Northern Hemisphere
False (it occurs in the Southern Hemisphere)
This is the unit of measurement based on absolute zero and commonly used by scientists to measure temperature
Kelvin
Name 4 objects in interplanetary space
Ex. Planets, the Sun, Dwarf Planets, Asteroids, Meteoroids, Comets
What is the next closest star to us and how many light years away is it?
Proxima Centauri & 4 light years
Is the Van Allen inner or outer Belt more hazardous to astronauts?
Inner Belt
_____ is a term that scientists use when they describe the changing conditions in the flows of matter and energy in space
Space Weather
The lack of _____ in space would cause the air inside an unprotected human’s lungs to immediately rush out in the vacuum of space
Pressure
This is the region of space between the Earth and the Moon
Cislunar Space
What types of stars are at the arms of a spiral galaxy (aka the parts of the galaxy away from the center)
Hot, younger, blue stars
This is the name of the radiation belts around the Earth filled with charged particles, trapped by Earth’s magnetic field
Van Allen radiation belts
The aurora borealis are caused by a zone of electrically-charged layers in the upper atmosphere called the ______
Ionosphere (it gets its name because it is filled with ions)