Astronomy Terms and Definitions

Astronomy Terms and Definitions

Assessment

Flashcard

Chemistry

10th Grade

Hard

Created by

Jared Holman

FREE Resource

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18 questions

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1.

FLASHCARD QUESTION

Front

Astronomical Unit (AU)

Back

The (average) distance between the Earth and the Sun

2.

FLASHCARD QUESTION

Front

Light-Year (ly)

Back

The distance light travels in one year (9.46 \times 10^{12} km or 9,460,000,000,000 km)

3.

FLASHCARD QUESTION

Front

Parallax

Back

A technique used to determine the distance of nearby stars by observing their "shift" in position based on background stars

4.

FLASHCARD QUESTION

Front

Apparent Magnitude

Back

The brightness of a celestial object as seen from Earth

5.

FLASHCARD QUESTION

Front

Absolute Magnitude

Back

The inherent brightness of an object as if it were a standard distance of 10 parsecs from Earth

6.

FLASHCARD QUESTION

Front

Spectroscopy

Back

Used to determine the chemical composition of stars

7.

FLASHCARD QUESTION

Front

Sidereal Day

Back

The time it takes Earth to complete one rotation relative to distant stars; shorter than a solar day (23 h 56 min)

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