Right ascension measures an object's _______ .

fixed horizontal direction compared to the solar system

changing horizontal direction compared to the viewer's cardinal directions.

fixed vertical direction compared to the solar system

changing vertical direction compared to the viewer's horizon

What does azimuth measure?

vertical angle north or south of the celestial equator

horizontal angle from the direction of the vernal equinox

What does altitude measure?

vertical angle north or south of the celestial equator

horizontal angle from the direction of the vernal equinox

What does right ascension measure?

horizontal angle from the direction of the vernal equinox

vertical angle north or south of the celestial equator

What does declination measure?

vertical angle north or south of the celestial equator

horizontal angle from the direction of the vernal equinox

Which system is the same regardless of time or place on Earth and is very precise?

right ascension and declination

Which system is the same regardless of time or place on Earth, and is easy to use?

right ascension and declination

Which system is easy to use, is very precise and is based on the local time and place?

right ascension and declination

Angular measurement is a method of __.

estimating distance and size in the sky as it appears to an observer

measuring the exact distance or size of something in the sky

estimating the distance between two objects are in space

measruing the exact light years between two objects in space.

the time it takes for the sun to return to the same position relative to you and your horizon.

the average time from sunrise to the next.

when the Earth turns less than once relative to the sun while it turns exactly once relative to the stars.

On June 21, the summer solstice, you are vacationing on a cruise ship in the Pacific Ocean. The Captain tells you that the ship is located on the Tropic of Cancer. (It is summer in the northern hemisphere, and the Tropic of Cancer is the northern tropic.) That noon, you can expect the sun to pass

23.5 degrees north of the southern horizon.

23.5 degrees north of the zenith.

23.5 degrees south of the zenith.

Diurnal motions are caused by

the motion of the Earth on its rotation axis.

the rapid rotations of heavenly bodies.

the motion of the Moon about the Earth.

the motion of the Sun about the Earth.

Because of precession, ____.

the direction of the tilt changes very, very gradually

the direction of the tilt changes as Earth orbits the Sun

sidereal days are shorter than synodic

The timing zodiac constellations are different than astrology labeled them mainly because of __.

human error when they were selected.

Night Sky Assessment Practice

Authored by Annie Montguire

Other Sciences

10th Grade - University

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70 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is the name of the star closest to the Celestial North Pole?

Rigel

Vega

Polaris

Orion

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What the celestial equivalent of "latitude?"

Inclination

Left Ascension

Right Ascension

Declination

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What are the units for right ascension?

degrees

hours

arc milliseconds

kilometers

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the name of the day that has the greatest amount of daylight (Northern Hemisphere)?

Summer Solstice

Fall Equinox

Spring Equinox

Winter Solstice

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

The Sun rise at the same time tomorrow as it did today.

True

False

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The solar day is longer than the sidereal day.

true

false

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Autumnal equinox the day and night time are equal.

true

false

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