H-R Diagrams
The measure of star's brightness, on the y-axis of the H-R Diagram.
luminosity
The phase when the Moon is in a straight line, between the Sun and the Earth.
New Moon
This is the season in the NH when the North Pole is pointed more toward the Sun.
Summer
term used to describe waves produced when the Sun-Earth-Moon alignment is present
The term used to describe a collection of stars - ours is the Milky Way
galaxy
On an H-R Diagram's x-axis, temperatures increase moving left to right. True or False
False! The temperatures rise as you move left (a very unusual graph).
The phase when the Earth is in a straight line, between the Moon and the Sun.
Full moon
This is the season in the SH when the North Pole is pointed more toward the Sun.
Winter
term used to describe tides when the Sun-Earth-Moon creates an angle (up to 90 degrees)
neap
The three types of galaxies
irregular, spiral and elliptical
About 90% of stars are in this area of the H-R Diagram.
the main sequence
This that describes the moon between the new Moon and full Moon phases.
Waxing - the Moon is not full yet, but is "growing" fatter each evening.
This term describes the two days when the Sun crosses the equator and creates equal daylight and dark hours.
Equinox ("equi" has the same root as the word "equal")
term used to describe the highest high tides and lowest low tides
spring
a black hole
The hottest, bright stars are found in this corner of the H-R Diagram.
top, left corner
The term that describes the period after the full moon but before the next new moon.
waning - the Moon is "shrinking" from full to new (no moon)
This is the season in the NH when we have the shortest day and the longest night.
Winter
term used to describe the lowest high tides and the lowest tides
neap
the streak of light produced by the atmosphere when an object is pulled toward Earth
meteor
The coolest, dimmest stars are found in this corner of the H-R Diagram.
lower, right corner
The Moon's gravity appears to have less effect on the Earth than the Sun. True or False
False - this can be seen in the tides.
This the season in the NH when we have the longest day and the shortest night.
Summer
Spring tides are produced during new and full Moon phases - fishing is better in these tides. True or False
True!
another name for the "nursery" where new stars are formed from gases and dust
nebula