Star
What do all stars form from?
Stellar Nebula
How far from earth is our sun? (think about the unit of measurement we use)
1 AU (astronomical unit)
What is the term for movement of energy from one substance to another?
Heat transfer
What unit of measurement is best for determining distance between stars?
Light years
The gravitational force of the moon.
What color is emitted by a star with surface temperature of 4,000 K?
Orange
What process creates energy in our sun? What elements are involved?
Nuclear Fusion. Hydrogen elements fuse to create Helium ions.
What heat transfer process occurs primarily in fluid states?
Convection
Hubble observed that the farther away a galaxy was from the earth, the faster it was moving away proving that what was happening to the universe?
It's expanding
When would a neap tide occur?
When the moon is at a 90-degree angle from the earth and sun.
What factor determines the progression of a star's "life cycle"?
It's initial mass
What are the zones of the INTERIOR of our sun, from innermost to outermost?
Core, Radiative Zone, Convective Zone
What heat transfer process brings the sun's energy to earth?
Radiation
Any event in which energy is emitted from the nucleus of an atom is referred to as this.
A Nuclear Reaction
Where do high tides occur?
On the side nearest to the moon, and on the opposite side of the earth, as the earth is pulled toward the moon.
What is the difference between absolute and apparent magnitude?
Absolute magnitude is the brightness of a star if the star were a set distance away. Apparent magnitude is "as seen" from Earth.
Basically, apparent magnitude depends on distance from earth, where absolute magnitude does not.
What are the zones of the EXTERIOR of the sun, from outermost to "surface" level?
Corona, Chromosphere, Photosphere
What process moves energy from one substance to another through physical contact?
Conduction
Rocket A moved 500 meters in 10 seconds
Rocket B moved 500 meters in 15 seconds
Rocket C moved 500 meters in 25 seconds
Place the rockets in order of their velocity from slowest to fastest.
C - B - A
What event occurs when the moon passes through earth's shadow?
A Lunar Eclipse
What determines the rotation direction of a star?
The direction the material began rotating as gravity pulled it together in the nebula
What type of star is our sun?
Yellow main sequence star
If a block of ice is heated to the melting point, what is happening to the particles?
They are moving faster, and farther apart, losing the solid shape/form, and becoming liquid.
What part of the sun rotates fastest?
The equator (25 earth days for one rotation)
To move from high to low tide takes approximately how long?
6 hours