Cycles of the Sun and Moon
Cycles of the Sun and Moon

Cycles of the Sun and Moon

Lead Author(s): Linda Khandro, Washington State Colleges

Source: Open Course Library

Student Price: FREE

An astronomy question pack by Linda Khandro.

This content is licensed under the Creative Commons Attribution 3.0 Unported License.

Cycles of the Sun and Moon Q1

The sun moves

A

about one degree westward each day.

B

about one degree eastward each day.

C

about 360 degrees westward each day.

D

about 360 degrees eastward each day.

Cycles of the Sun and Moon Q2

The sun is on the celestial equator at the times of the

A

vernal equinox and the summer solstice.

B

autumnal equinox and the vernal equinox.

C

summer solstice and the winter solstice.

D

autumnal equinox and the winter solstice.

Cycles of the Sun and Moon Q3

The ecliptic is

A

the centerline of the zodiac.

B

the projection of Earth's orbit on the sky.

C

the apparent path of the sun around the sky.

D

all of the above

Cycles of the Sun and Moon Q4

At what two celestial locations do the celestial equator and ecliptic coincide?

A

winter solstice and summer solstice

B

vernal equinox and autumnal equinox

C

They coincide at all points because they are the same.

D

north celestial pole and south celestial pole

Cycles of the Sun and Moon Q5

The point in Earth's orbit where Earth is farthest from the sun is known as

A

aphelion.

B

perihelion.

C

precession.

D

the winter solstice.

Cycles of the Sun and Moon Q6

The planet(s) of our solar system that are usually or never visible to the naked eye are

A

Mars.

B

Mercury and Neptune.

C

Saturn, Uranus, and Neptune.

D

Uranus and Neptune.

Cycles of the Sun and Moon Q7

A solar eclipse may occur

A

when the Moon is first quarter phase

B

when the Moon is 3rd quarter phase

C

when the Moon is full

D

when the Moon is new

Cycles of the Sun and Moon Q8

A lunar eclipse may occur

A

when the Moon is first quarter phase

B

when the Moon is 3rd quarter phase

C

when the Moon is full

D

when the Moon is new

Cycles of the Sun and Moon Q9

The ______________ of the moon is the period of time for the moon to complete a cycle of the lunar phases and is approximately 29.5 days long.

A

sidereal period

B

saros cycle

C

synodic period

D

eclipse season

Cycles of the Sun and Moon Q10

A solar eclipse that occurs when the moon's umbra does not reach Earth's surface is called

A

a total solar eclipse.

B

a partial solar eclipse.

C

an annular solar eclipse.

D

a penumbral solar eclipse.

Cycles of the Sun and Moon Q11

A waxing crescent moon is visible

A

near the eastern horizon just before sunrise.

B

near the eastern horizon just after sunset.

C

near the western horizon just before sunrise.

D

near the western horizon just after sunset.

Cycles of the Sun and Moon Q12

If the plane of the Earth's equator were not tilted with respect to the ecliptic plane

A

the daylight period of Earth would be the same year-round.

B

there would be no seasonal changes.

C

Earth's poles would not experience six month long nights.

D

All of the above

Cycles of the Sun and Moon Q13

Spring tides occur

A

at new moon and first quarter moon.

B

at first quarter and third quarter moons.

C

at new moon and full moon.

D

at third quarter and full moons.

Cycles of the Sun and Moon Q14

The semi major axis of an ellipse is

A

the ratio of the longest diameter of the ellipse to that of the shortest diameter of the ellipse.

B

half the length of the shortest diameter of the ellipse.

C

half the length of the longest diameter of the ellipse.

D

the distance between the two foci of the ellipse.

Cycles of the Sun and Moon Q15

Parallax is

A

the apparent motion of an object due to the motion of the observer.

B

the distance between two foci of an ellipse.

C

the small circle that the planets slid along in Ptolemy's geocentric universe.

D

the circular orbits used in Copernicus' heliocentric universe.

Cycles of the Sun and Moon Q16

Galileo's observations of a complete set of phases of Venus proved

A

that Venus orbited the sun.

B

that Earth orbited the sun.

C

that all of the planets orbited the sun.

D

that the moon orbited Earth.

Cycles of the Sun and Moon Q17

Kepler's first law of planetary motion implies that

A

the planets move at a constant speeds at all points in their orbits.

B

the planets all move around the Earth in elliptical orbits.

C

uniform circular motion is adequate to describe the motion of all planets.

D

planets move in elliptical orbits around the sun.

Cycles of the Sun and Moon Q18

Gravity obeys an inverse square relation. This statement implies that the force due to gravity between two masses

A

will increase as the distance between the two masses increases.

B

will decrease as the square of the distance between the two masses increases.

C

will cause the two masses to move away from each other.

D

will cause the two masses to move in a straight line.

Cycles of the Sun and Moon Q19

The period of Jupiter's orbit around the sun is approximately 12 years. What is the approximate distance from the sun to Jupiter?

A

144 AU

B

1728 AU

C

42 AU

D

5.2 AU

Cycles of the Sun and Moon Q20

An apparent westward motion of a planet in the sky compared to the background stars (as viewed from the Earth) when observed on successive nights is referred to as

A

epicycle.

B

retrograde motion.

C

prograde motion.

D

heliocentric motion.

CC BY - Khandro

CC BY

Creative Commons License This work is licensed under a Creative Commons Attribution 3.0 Unported License.

Washington State Colleges

Linda Khandro