Astronomy Basics
A scientific law tells you this
the force that is combo of both electric and magnetic force working together. It exerts a push on moving electrical charges (like electrons).
hint: starts with L
what is the Lorentz Force?
the name of the diagram used to classify stars
what is the Hertzsprung Russell Diagram?
the theory that the universe was one hot, dense point that began to rapidly expand, forming space, time, matter, and energy.
what is the big bang theory?
Isaac Newton's 3rd law states this
every action has an equal and opposite reaction
a scientific theory tells you this
what is HOW something happens?
the two factors that determine the strength of gravitational attraction between two objects
what is mass and distance?
the kind of star our sun is
what is a G-Type Main Sequence Star?
name at least three of the fundamental forces
what is...
gravity
electromagnetism
strong nuclear
weak nuclear
Kepler's 1st law states that planets move around the sun in a(n) _________ rather than a circle
what is an ellipse?
The model of the solar system that says that everything revolves around the Earth
what is geocentric?
the term that explains how a massive object, like a galaxy or black hole, bends the path of light from distant stars or galaxies behind it
what is Gravitational Lensing?
name 2-4 inner and outer layers of the sun
what is the..
Core
Radiative Zone
Convection Zone
Photosphere
Chromosphere
Transition Region
Corona
the event that happened when the cosmos cooled down enough for free electrons and atomic nuclei to bind together and form the first neutral atoms (hydrogen and helium)
hint: starts with R
what is recombination?
person who discovered the four largest moons around Jupiter in the year 1610
who is Galileo?
the model of the solar system that says everything revolves around the sun
what is heliocentric?
name 2-3 galaxy types we discussed
what is...
Spiral galaxies
Barred spiral galaxies
Elliptical galaxies
Irregular galaxies
Lenticular galaxies
Seyfert galaxies
define a blackbody or give an example of one
what is a perfect object that soaks up all the light hitting it and then gives off its own energy in the form of glowing light.
ex: iron rod getting hot in a fire, changing color.
the two kinds of the doppler effect
hint: both are a colour + the word shift
what is redshift and blueshift?
Name 3+ phases of the moon
what is..
full moon, new moon, waning/waxing gibbous, waning/waxing crescent, first/third quarter
the term for the appearance that a planet is moving backward.
what is retrograde motion?
the type of matter that is an invisible, unknown substance that makes up about 85% of all the matter in the universe
responsible for keeping galaxies together
what is dark matter?
the kind of telescope that Galileo used
(refractor or reflector)
what is a refractor?
the name of the theory that states that the universe will end by going back into one single point
OR
what kind of telescope is the Hubble?
what is the big crunch?
or
what is a reflector?
the theory that explains how celestial bodies like planets, stars, and black holes are formed through the gradual accumulation of matter driven by gravity.
hint: starts with A
what is Accretion Theory?