TEST 1

Question 1

The totality of all space, time matter, and energy

Answer 1

Universe

Question 2

The study of the universe

Answer 2

Astronomy

Question 3

The distance traveled by light in a year, at a speed of about 300,000 kilometers per second

Answer 3

Light-years

Question 4

The approach to investigation, combining thinking and doing, that is, theory and experiment

Answer 4

Scientific method

Question 5

patterns and relationships among objects even when no true connection exists

Answer 5

Constellations

Question 6

A canopy of stars resembling an astronomical painting on a heavenly ceiling

Answer 6

Celestial sphere

Question 7

the points where Earth’s axis intersects the celestial sphere

Answer 7

Celestial poles

Question 8

Represents the intersection of Earth’s equatorial plane with the celestial sphere, lies midway between the north and south celestial poles

Answer 8

Celestial equator

Question 9

The apparent motion of the Sun on the sky traces out a path on the celestial sphere known as…

Answer 9

Ecliptic

Question 10

A day measured by the stars

Answer 10

Sidereal day

Question 11

The 12 constellations through which the Sun passes as it moves along the ecliptic

Answer 11

Zodiac

Question 12

The tilt of Earth’s rotation axis relative to the ecliptic is responsible for the…

Answer 12

Seasons

Question 13

The two points where the ecliptic intersects the celestial equator, that is, where Earth’s rotation axis is perpendicular to the line joining Earth to the Sun

Answer 13

Equinoxes

Question 14

Occurs in northern spring, on or near March 21, as the Sun crosses the celestial equator moving north

Answer 14

Vernal equinox

Question 15

Like a spinning top that rotates rapidly on its own axis while that axis slowly revolves about the vertical, Earth’s axis changes its direction over the course of time. This change is called…

Answer 15

Precession

Question 16

The time required for Earth to complete exactly one orbit around the Sun, relative to the stars

Answer 16

Sidereal year

Question 17

An imaginary line on the celestial sphere through the north and south celestial poles, passing directly overhead at the given location

Answer 17

Meridian

Question 18

The average (or mean) of all solar days over an entire year

Answer 18

Mean solar day

Question 19

In 1 ____, the Moon completes one revolution and returns to its starting point on the celestial sphere

Answer 19

sidereal month