Science Earth/ Space Review Flashcards
Define Galaxy.
A collection of stars, dust, and gas bound together by gravity
What unit would you use to measure the distance between stars?
Light years
What color are the hottest stars?
Blue
How long does it take for the moon to rotate?
28.5
Where is the energy of the Sun produced? How does the energy transfer it’s way to the surface?
The core. Radiation Zone and Convection
What holds stars in their galaxies?
Gravity
What is the Law of Conservation of Energy and how is it applied to the Earth-Sun system?
The energy that was changed in the sun was brought down to earth
How long does it take for the moon to orbit the Earth?
28.5 days
What does the Hertzsprung-Russell diagram show us?
The brightness and temperature of the different stars
Define Spring tides
When there is high and low tides. The Sun, Moon, and Earth are in a straight line.
Define Neap tides
When the tides are all equal (barley any). The Sun, Moon, and Earth are in a right angle
What force holds stars together?
Gravity
What unit would you use to measure the distances between planets?
AUs
Define apparent magnitude
The measure of a star’s brightness as seen from earth.
Define absolute magnitude
The actual brightness
Where does the Sun rotate fastest, at its poles or the equator?
Equator
How would you describe the Sun?
A yellow star, size medium, and has an average brightness
Put the following objects in size order- Earth, Moon, Sun, Galaxy, and Solar system
Galaxy, Solar System, Sun, Jupiter, Earth, and the Moon
Define Heliocentric
Sun-centered
Why do we see different constellations during the year?
The orbit of the Earth
Write the phases of the moo, starting with the full moon.
Full moon, waning gibbous, third Quarter, waning crescent, new moon, waxing crescent, first quarter, and waxing gibbous
How does the Sun get its energy? How is it produced?
Nuclear Fusion. From the core.
What causes tides on Earth?
Moon’s gravity pull
Draw a solar eclipse
Sun, moon, Earth
