Question 1

Which sequence below is correctly ordered from smallest to largest size?

Accepted Answer

A) Earth, solar system, Milky Way galaxy, clusters of galaxies 
B) solar system, Earth, galaxy clusters, Milky Way galaxy 
C) Earth, Milky Way galaxy, solar system, galaxy clusters 
D) galaxy clusters, solar system, Milky Way galaxy, Earth 
A) Earth, solar system, Milky Way galaxy, clusters of galaxies 
B) solar system, Earth, galaxy clusters, Milky Way galaxy 
C) Earth, Milky Way galaxy, solar system, galaxy clusters 
D) galaxy clusters, solar system, Milky Way galaxy, Earth A

Question 2

From 1979 to 1999,what planet was farther from the Sun than Pluto?

Accepted Answer

A) Earth 
B) Jupiter 
C) Uranus 
D) Neptune 
A) Earth 
B) Jupiter 
C) Uranus 
D) Neptune D

Question 3

Why would the English system of units be more useful if a foot contained 10 inches?

Accepted Answer

Answer not provided.

Question 4

Considering that the Sun is about 1/100 AU in diameter and a typical planet like the Earth is 1/10,000 AU in diameter,discuss whether or not our Solar System is crowded or empty.

Accepted Answer

Our Solar System can be considered relat

Question 5

Why is scientific notation used in astronomy?

Accepted Answer

A) It makes it easy to write big or small numbers. 
B) All astronomical distances are expressed in metric units. 
C) It makes conversions between units easy. 
D) Astronomers invented scientific notation. 
A) It makes it easy to write big or small numbers. 
B) All astronomical distances are expressed in metric units. 
C) It makes conversions between units easy. 
D) Astronomers invented scientific notation.

Question 6

The nearest star is 1 light year from the solar system.

Accepted Answer

A) True 
 B)False

Question 7

Assume the size of the Sun is represented by a baseball (diameter about 7 cm).At this scale the Earth is about 15 metres (150 million kilometres,or 8 light minutes)away.How far away,to scale,would the nearest stars to the Sun be? Pick the closest answer.

Accepted Answer

A) 100 metres away 
B) about the distance across 50 soccer fields (50 x 100 metres, or 5 kilometres) 
C) about the distance between Toronto and Windsor (330 kilometres) 
D) about the distance from Toronto to Vancouver (4300 kilometres) 
A) 100 metres away 
B) about the distance across 50 soccer fields (50 x 100 metres, or 5 kilometres) 
C) about the distance between Toronto and Windsor (330 kilometres) 
D) about the distance from Toronto to Vancouver (4300 kilometres)

Question 8

The average distance from the Earth to the Sun is 1 Astronomical Unit.

Accepted Answer

A) True 
 B)False

Question 9

From what you know about Astronomical Units and light years,how would you define a light minute?

Accepted Answer

A light minute is a unit of distance tha

Question 10

Why do we measure some distances in astronomy in light years and some in Astronomical Units?

Accepted Answer

In astronomy, distances are vast and can

Question 11

If an object is 1,000 light years away,how do we see it?

Accepted Answer

A) as it looked 1,000 years ago 
B) as it appeared to our ancestors 1,000 years ago 
C) as it looked 1,000 light years ago 
D) as it is right now, but it appears 1,000 times dimmer 
A) as it looked 1,000 years ago 
B) as it appeared to our ancestors 1,000 years ago 
C) as it looked 1,000 light years ago 
D) as it is right now, but it appears 1,000 times dimmer

Question 12

How many centimetres are there in one kilometre?

Accepted Answer

A) 1,000 
B) 10,000 
C) 1×10⁵ 
D) 1×10⁶ 
A) 1,000 
B) 10,000 
C) 1×10⁵ 
D) 1×10⁶

Question 13

It takes light 1.3 seconds to travel from the Moon to the Earth and 8 minutes to travel from the Sun to the Earth.How much farther from the Earth is the Sun,compared to the Moon?

Accepted Answer

A) 2.1 times farther 
B) 6.2 times farther 
C) 10 times father 
D) 370 times farther 
A) 2.1 times farther 
B) 6.2 times farther 
C) 10 times father 
D) 370 times farther

Question 14

How many stars are in the Milky Way galaxy?

Accepted Answer

A) about 100 trillion 
B) about 100 billion 
C) about 100 million 
D) about 100, 000 
A) about 100 trillion 
B) about 100 billion 
C) about 100 million 
D) about 100, 000

Question 15

Light takes about 8 minutes to travel from the Sun to the Earth,and about 40 minutes to travel from the Sun to Jupiter.Jupiter is about ____________________ AU from the Sun.

Accepted Answer

The answer of Light takes about 8 minutes to travel...

Question 16

Which of the following is another way to express 1.65 billion?

Accepted Answer

A) 1.65×10⁵ 
B) 1.65×10⁶ 
C) 1.65×10⁹ 
D) 1.65×10¹² 
A) 1.65×10⁵ 
B) 1.65×10⁶ 
C) 1.65×10⁹ 
D) 1.65×10¹²

Question 17

An Astronomical Unit is larger than a light year.

Accepted Answer

A) True 
 B)False

Question 18

The speed of light is 3.0×10⁵ km/sec,and it takes light 1.3 seconds for light to travel from the Moon to the Earth.Based on this information,what is the distance to the Moon?

Accepted Answer

A) 2.3 kilometres 
B) 3.9 kilometres 
C) 230,000 kilometres 
D) 390,000 kilometres 
A) 2.3 kilometres 
B) 3.9 kilometres 
C) 230,000 kilometres 
D) 390,000 kilometres

Question 19

-In the diagram,what is the diameter of Mercury?

Accepted Answer

A) about 240 kilometres 
B) about 2400 kilometres 
C) about 24,000 kilometres 
D) about 2.4×10⁶ kilometres 
A) about 240 kilometres 
B) about 2400 kilometres 
C) about 24,000 kilometres 
D) about 2.4×10⁶ kilometres

Question 20

The Earth has a radius of about 6400 kilometres,the Sun has a radius of about 7.0×10⁵ kilometres,and a rubber ball has a radius of 6.4 centimetres.If you were to construct a scale model of the solar system using the rubber ball to represent the Earth,what is the radius of a ball needed to represent the Sun in your model?

Accepted Answer

A) 7.0 cm 
B) 70 cm 
C) 700 cm 
D) 7000 cm 
A) 7.0 cm 
B) 70 cm 
C) 700 cm 
D) 7000 cm

Which sequence below is correctly ordered from smallest to largest size?

From 1979 to 1999,what planet was farther from the Sun than Pluto?

Why would the English system of units be more useful if a foot contained 10 inches?

Considering that the Sun is about 1/100 AU in diameter and a typical planet like the Earth is 1/10,000 AU in diameter,discuss whether or not our Solar System is crowded or empty.

Why is scientific notation used in astronomy?

The nearest star is 1 light year from the solar system.

Assume the size of the Sun is represented by a baseball (diameter about 7 cm).At this scale the Earth is about 15 metres (150 million kilometres,or 8 light minutes)away.How far away,to scale,would the nearest stars to the Sun be? Pick the closest answer.

The average distance from the Earth to the Sun is 1 Astronomical Unit.

From what you know about Astronomical Units and light years,how would you define a light minute?

Why do we measure some distances in astronomy in light years and some in Astronomical Units?

If an object is 1,000 light years away,how do we see it?

How many centimetres are there in one kilometre?

It takes light 1.3 seconds to travel from the Moon to the Earth and 8 minutes to travel from the Sun to the Earth.How much farther from the Earth is the Sun,compared to the Moon?

How many stars are in the Milky Way galaxy?

Light takes about 8 minutes to travel from the Sun to the Earth,and about 40 minutes to travel from the Sun to Jupiter.Jupiter is about ____________________ AU from the Sun.

Which of the following is another way to express 1.65 billion?

An Astronomical Unit is larger than a light year.

The speed of light is 3.0×10⁵ km/sec,and it takes light 1.3 seconds for light to travel from the Moon to the Earth.Based on this information,what is the distance to the Moon?

-In the diagram,what is the diameter of Mercury?

User's Guide to the Sky

The Origin of Modern Astronomy

Astronomical Telescopes and Instruments

Sun Light and Sun Atoms

The Family of Stars

The Structure and Formation of Stars

The Deaths of Stars

The Milky Way Galaxy

Galaxies

Cosmology in the 21st Century

The Origin of the Solar System

Comparative Planetology of the Terrestrial Planets

Comparative Planetology of the Jovian Planets

Life on Other Worlds

Filters

Exam 1: The Scale of the Cosmos

Which sequence below is correctly ordered from smallest to largest size?

From 1979 to 1999,what planet was farther from the Sun than Pluto?

Why would the English system of units be more useful if a foot contained 10 inches?

Considering that the Sun is about 1/100 AU in diameter and a typical planet like the Earth is 1/10,000 AU in diameter,discuss whether or not our Solar System is crowded or empty.

Why is scientific notation used in astronomy?

The nearest star is 1 light year from the solar system.

Assume the size of the Sun is represented by a baseball (diameter about 7 cm).At this scale the Earth is about 15 metres (150 million kilometres,or 8 light minutes)away.How far away,to scale,would the nearest stars to the Sun be? Pick the closest answer.

The average distance from the Earth to the Sun is 1 Astronomical Unit.

From what you know about Astronomical Units and light years,how would you define a light minute?

Why do we measure some distances in astronomy in light years and some in Astronomical Units?

If an object is 1,000 light years away,how do we see it?

How many centimetres are there in one kilometre?

It takes light 1.3 seconds to travel from the Moon to the Earth and 8 minutes to travel from the Sun to the Earth.How much farther from the Earth is the Sun,compared to the Moon?

How many stars are in the Milky Way galaxy?

Light takes about 8 minutes to travel from the Sun to the Earth,and about 40 minutes to travel from the Sun to Jupiter.Jupiter is about ____________________ AU from the Sun.

Which of the following is another way to express 1.65 billion?

An Astronomical Unit is larger than a light year.

The speed of light is 3.0×10⁵ km/sec,and it takes light 1.3 seconds for light to travel from the Moon to the Earth.Based on this information,what is the distance to the Moon?

-In the diagram,what is the diameter of Mercury?

User's Guide to the Sky

The Origin of Modern Astronomy

Astronomical Telescopes and Instruments

Sun Light and Sun Atoms

The Family of Stars

The Structure and Formation of Stars

The Deaths of Stars

The Milky Way Galaxy

Galaxies

Cosmology in the 21st Century

The Origin of the Solar System

Comparative Planetology of the Terrestrial Planets

Comparative Planetology of the Jovian Planets

Life on Other Worlds

Filters