day length measured with respect to the stars.

Time for the Sun to reach its highest point one day to the next.

Deflection of ocean and air currents by a spinning planet.

A natural process that retains the Sun's heat on Earth's surface.

Gas giants: Jupiter, Saturn, Uranus, Neptune, named for their resemblance to Jupiter.

Synchronous rotation:

Rotation period equals orbital period.

An area outside Neptune, larger than the asteroid belt.

Bulge of ocean waters due to the moon's pull and centrifugal force.

Bright areas surrounding the maria.

the blanket of rock chunks and fine powder on the moon.

Principle of mediocrity

What happened in our solar system and on Earth is typical of prebiotic and biotic evolution elsewhere in the universe. (Earth is not special)

the large smooth dark areas on the moon

the long light streaks of pulverized rock radiating out from the craters.

Investigate the possibility of extraterrestrial life.

Hydrostatic equilibrium

Balancing of pressures: outward and inward.

the point in an orbit closest to the Sun.

Angle measured eastward along the horizon from north to the point directly below the object.

Grid lines running North-South on a star chart for locating celestial objects.

Declination: the grid lines running east-west on a star chart for locating celestial objects.

the grid lines running east-west on a star chart for locating celestial objects.

the international boundary of space.

an object's angular distance above the horizon.

Lowest region of the atmosphere, from Earth's surface to about 3.7–6.2 miles (6–10 km), lower boundary of the stratosphere.

Process by which the eye becomes more sensitive to dim light.

Envelope of gases surrounding Earth or another planet.

Acceleration due to gravity at a planet's surface.

Tendency of a body at rest to stay at rest or a body in motion to keep moving straight at constant speed.

A particle of visible light or other electromagnetic radiation.

the critical speed needed to escape a planet's gravity.

Electromagnetic wave:

a wave of alternating electric and magnetic energy.

Wave-particle duality:

the theory that electromagnetic radiation may be treated as either a particle (photon) or an electromagnetic wave.

Magnetic lines of force: Curved lines representing a magnetic field, where the number of lines indicates strength and the tangent at any point shows the direction of magnetic force.

Curved lines representing a magnetic field, where the number of lines indicates strength and the tangent at any point shows the direction of magnetic force.

Region around a magnetic material or moving electric charge where magnetism acts.

Relative orientation of poles; direction of a magnetic or electric field.

Area outside Neptune, larger than the asteroid belt.

Gas giants Jupiter, Saturn, Uranus, and Neptune, named for their resemblance to Jupiter.

circulating movement of a heated liquid or gas

Waves generated in the Earth's interior by earthquakes.

First Semester Vocab Astronomy Flashcards

Student preview

55 questions

Show all answers

1.

FLASHCARD QUESTION

Front

Parameters of Olber's Paradox:

Back

The universe must be Infinite, Static, and Timeless.

2.

FLASHCARD QUESTION

Front

Argument that the night sky's darkness contradicts an infinite, eternal universe.

Back

Olber's paradox

3.

FLASHCARD QUESTION

Front

Average density for halting Universe expansion after infinite time; a flat Universe has this density.

Back

critical density

4.

FLASHCARD QUESTION

Front

Extra term by Einstein in static universe equations.

Back

Cosmological constant

5.

FLASHCARD QUESTION

Front

Molecules made of antiprotons, antineutrons, and positrons.

Back

Antimatter

6.

FLASHCARD QUESTION

Front

Ozone-

Back

03 another form of oxygen that shields us from solar UV radiation.

7.

FLASHCARD QUESTION

Front

Differentiation

Back

separation of materials by density

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