Fusion Confusion
The sun is made up of what
Hydrogen and Helium
This inward-pulling force holds the Sun's giant ball of gas together.
gravity
This is the primary physical characteristic of a star that determines the specific types and amounts of elements it can produce.
It's Mass
Kepler’s First Law states that planets do not orbit the Sun in perfect circles, but rather in this stretched-out, oval shape.
ellipse
This is the only phase where the Moon sits directly between the Earth and the Sun, making its illuminated side completely invisible to us.
New Moon
The process that occurs in the sun is
nuclear fusion
When light waves from distant galaxies stretch out, their light shifts toward this end of the visible spectrum.
red shift
When we talk about stars what diagram do we use?
HR
When closer to a planet the object moves more
faster
When the Moon is growing from a New Moon to a Full Moon, it is described by this term, which means its illuminated portion is increasing.
Waxing
The sun is always in what stage
Main sequence
The stretching of light waves from distant galaxies provides direct, observable evidence that the universe is doing this.
expanding
Stars are mainly made up of these two elements
hydrogen and helium
Kepler’s Second Law is also known as the law of
"Equal Areas in Equal Time"
This specific primary phase occurs when exactly half of the Moon's near side is illuminated, halfway between the New Moon and the Full Moon.
First quarter / half moon
These two extreme environmental conditions are required in the core for hydrogen nuclei to overcome their natural repulsion and fuse.
high temperature and high pressure
If a galaxy were collapsing or moving toward Earth instead of away, its light spectrum would experience this opposite type of shift.
blue shift
Unlike high-mass stars, low-mass stars cannot create elements heavier than iron because their cores lack sufficient quantities of these two environmental conditions.
temperature and pressure
When father from a planet the object moves more
slower
This curved, banana-like shape describes the Moon when it is less than half illuminated, occurring right before or right after a New Moon.
crescent Moon
Nuclear fusion converts matter into energy by turning a small amount of this physical property into light and heat.
mass
Heavy elements are violently released into deep space when a massive star dies in this type of explosion.
supernova
What is nucleosynthesis?
the process by which new elements are created in stars.
Kepler’s First Law states that the Sun does not sit exactly in the center of a planet's elliptical orbit, but rather at one of these two geometric points.
foci
Derived from a word meaning "humpbacked," this term describes the Moon when it is more than half illuminated but not yet completely full.
gibbous Moon