Chapter 25: Our Solar System

Question 1

Older than rocks on the Earth

Answer 1

Lunar rocks

Question 2

A rock found mainly on the moon’s planes

Answer 2

Basalt

Question 3

What moon rock is composed mostly of the mineral feldspar?

Answer 3

Anorthosite

Question 4

Abundant on the moon, rare on the Earth

Answer 4

Natural glass

Question 5

Pyroxferroite, armalcolite, tranquillityite

Answer 5

3 new discovered moon minerals not found on Earth

Question 6

Mineral which makes up the highlands of the Moon

Answer 6

Anorthosite

Question 7

Means starlike

Answer 7

Asteroids

Question 8

First asteroid discovered (1 Jan 1801 by Giuseppe Piazzi)

Answer 8

Ceres

Question 9

Small, irregular shaped body composed of water, ice, rock, and frozen gases

Answer 9

Comet

Question 10

Refers to the space within galaxies

Answer 10

Intragalactic space

Question 11

Unstable stars; their action makes them appear to be winking

Answer 11

Nova

Question 12

Exploding star

Answer 12

Supernova

Question 13

Flashes electromagnetic emissions

Answer 13

Pulsar

Question 14

The ultimate star, which cannot radiate anything

Answer 14

Black hole

Question 15

Clouds of matter not yet stars

Answer 15

Nebulae

Question 16

A spiral-shaped galaxy of which the Earth is a part

Answer 16

The Milky Way

Question 17

How many days does it take the moon to orbit the earth?

Answer 17

2.27

Question 18

Since the Moon is less massive than the earth, its gravitational pull is

Answer 18

only one-sixth that of earth’s.

Question 19

Day and night on the moon can have a difference of __°F

Answer 19

520

Question 20

From the earth we always see ________ of the moon.

Answer 20

The same side

Question 21

Long, irregular depressions on the moon

Answer 21

Rilles

Question 22

The Martian day is _____ to a day on earth

Answer 22

Similar

Question 23

The reddish areas on Mars were thought to be

Answer 23

Deserts

Question 24

Mariner 4 took the first ________ of another planet

Answer 24

Photos

Question 25

Saturn’s rings contain mostly

Answer 25

Rock and ice

Question 26

The exact number of Saturn’s moons is

Answer 26

Experts are still unsure

Question 27

The orbits of most comets are
a. Eccentric
b. Circular
c. Consistent
d. None of these

Answer 27

a. Eccentric

Question 28

Comets have been observed
a. Since 1910
b. Only recently
c. Since ancient times
d. In the last 200 years

Answer 28

c. Since ancient times

Question 29

The comet’s tail forms as it nears
a. The sun
b. The moon
c. The earth
d. Uranus

Answer 29

a. The sun

Question 30

Vikings 1 and 2 consisted of orbiters and landers.

Answer 30

TRUE

Question 31

The existence of water was found in liquid form on Mars

Answer 31

FALSE

Question 32

The highest content of surface material on Mars is silicon and iron

Answer 32

TRUE

Question 33

Iron provides the red color of the Martian landscape

Answer 33

TRUE - book says false, though
“This color is due to the rock and dust covering the surface of Mars. It has been analyzed and found to have a high iron content, so it has a rusty look.”
(Iron oxide in regolith)

Question 34

By virtue of its size, Jupiter makes up ___ times the mass of all the other planets put together.

Answer 34

3 x

Question 35

Due to its size, Jupiter rotates very slowly.

Answer 35

FALSE
(Very quickly, about every 10 hours)

Question 36

Of all the planets, Jupiter has the most intense radiation belts.

Answer 36

TRUE

Question 37

How many rings encircle Uranus?

Answer 37

11 known rings

Question 38

Neptune and Uranus are very similar

Answer 38

TRUE

Question 39

In 2004, two rovers landed on Mars; their names are Spirit and Opportunity

Answer 39

TRUE
(formerly MER-A & MER-B)

Question 40

Some scientists have reclassified Pluto as a dwarf planet

Answer 40

TRUE

Question 41

The Kuiper Belt is a ring of celestial bodies that extends billions of miles beyond the orbit of Neptune.

Answer 41

TRUE