**Problems 149 to 234......11.1 Mby PDF**... [Download Here]

## Index of Problem Titles by Approximate Grade Band

**Grade 3-5**

Cosmic Bar Graphs [3-5] 2

Time Zone Math [3-5] 3

The Dollars and Cents of Research 4-6 4

Number Sentence Puzzles 3-4 5

Fractions in Space 3-5 6

Time Intervals 3-5 9

The Stellar Magnitude Scale 3-6 10

Groups, Clusters and Individuals 3-5 11

A Matter of Timing 3-6 12

Areas and Probabilities 4-6 13

Solar Storms; Sequences and Probabilities - I 4-7 14

Solar Storms; Sequences and Probabilities - II 4-7 15

Lunar Cratering - Probability and Odds 4-7 18

Is there a lunar meteorite hazard? 5-7 22

The Earth and Moon to Scale 4-6 23

Planet Fractions and Scales 4-6 24

The Relative Sizes of the Sun and Stars 4-6 25

Galaxies to Scale 4-6 27

Spectral Classification of Stars 5-8 43

Pan's Highway - Saturn's Rings 4-6 48

Star Cluster Math 3-5 53

Star Magnitudes and Multiplying Decimals 5-8 69

Galaxy Distances and Mixed Fractions 3-5 70

Atomic Numbers and Multiplying Fractions 3-5 71

Nuclear Arithmetic 4-6 72

Perimeters - Which constellation is the longest? 3-5 76

Kelvin Temperatures and Very Cold Things 5-8 78

Atomic Fractions 3-6 84

More Atomic Fractions 3-6 85

Atomic Fractions - III 3-6 86

**Grade 6-8**

The Big Bang - Hubble's Law [6-8] 1

The Dollars and Cents of Research 4-6 4

Equations with One Variable - I 6-8 7

Equations with One Variable - II 6-8 8

The Stellar Magnitude Scale 3-6 10

A Matter of Timing 3-6 12

Areas and Probabilities 4-6 13

Solar Storms; Sequences and Probabilities - I 4-7 14

Solar Storms; Sequences and Probabilities - II 4-7 15

Solar Storm Timeline 6-8 16

Solar Storm Energy and Pie Graphs 6-8 17

Lunar Cratering - Probability and Odds 4-7 18

Is there a lunar meteorite hazard? 5-7 22

The Earth and Moon to Scale 4-6 23

Planet Fractions and Scales 4-6 24

The Relative Sizes of the Sun and Stars 4-6 25

Fly Me to the Moon! 6-8 26

Galaxies to Scale 4-6 27

The Solar Neighborhood Within 17 light years 6-8 29

Our Neighborhood in the Milky Way 6-8 30

The International Space Station - Follow that Graph! 6-8 35

Light Travel Times 6-8 41

Spectral Classification of Stars 5-8 43

Pan's Highway - Saturn's Rings 4-6 48

Tidal Forces - Let 'er Rip 7-10 49

Are U Really Nuts? 6-8 50

Measuring Star Temperatures 6-8 55

THEMIS: A magnetic case of what came first. 6-8 56

Unit Conversions - III 6-10 57

Can you hear me now? 6-8 58

The STEREO Mission: Getting the message across 6-8 59

Angular Size and Velocity 8-10 61

Hubble Sees and Distant Planet 6-10 62

How to make faint things stand out in a bright world 6-8 63

The Milky Way - A mere cloud in the cosmos 8-10 65

Where did all the stars go? 6-8 66

Star Circles 8-9 67

Star Magnitudes and Multiplying Decimals 5-8 69

Nuclear Arithmetic 4-6 72

Working with Rates 6-8 73

Rates and Slopes: An Astronomical Perspective 7-9 74

Areas Under Curves: An Astronomical Perspective 6-8 75

Kelvin Temperatures and Very Cold Things 5-8 78

Pulsars and Simple Equations 6-8 79

The Many Faces of Energy 8-10 80

Variables and Expressions from Around the Cosmos 6-8 81

Craters are a Blast! 8-10 82

Fractions and Chemistry 3-6 83

Atomic Fractions 3-6 84

More Atomic Fractions 3-6 85

Atomic Fractions - III 3-6 86

Kepler - The hunt for Earth-like planets 6-8 87

**Grade 9-12**

The Mass of the Moon 8-11 19

The Moon's Density - What's inside? 9-12 20

The Hot Lunar Interior 10-12 21

Extracting Oxygen from Moon Rocks 9-11 28

Calculating Arc Lengths of Simple Functions - I 12 31

The Ant and the Turntable - Frames of reference 11-12 32

The Dawn Mission - Ion Rockets and Spiral Orbits 12 33

Modeling a Planetary Nebula 12 34

Why are hot things red? 11-12 36

Collapsing Gas Clouds - Stability 11-12 37

The Big Bang - Cosmic Expansion 12 38

Space Math Differentiation 12 39

Space Shuttle Launch Trajectory 12 40

Cross Sections and Collision Times 9-11 42

Stellar Temperature, Size and Power 10-12 44

Fuel Level in a Spherical Tank 12 45

The Mass of the Van Allen Radiation Belts 11-12 46

The Io Plasma Torus 12 47

Tidal Forces - Let 'er Rip 7-10 49

Fitting Periodic Functions - Distant Planets 9-12 51

The Limiting Behavior of Selected Functions 11-12 52

Magnetic Forces in Three Dimensions 9-12 54

Unit Conversions - III 6-10 57

Optimization 12 60

Angular Size and Velocity 8-10 61

Hubble Sees and Distant Planet 6-10 62

The Mathematics of Ion Rocket Engines 9-12 64

The Milky Way - A mere cloud in the cosmos 8-10 65

Star Circles 8-9 67

Finding Mass in the Cosmos 9-12 68

Rates and Slopes: An Astronomical Perspective 7-9 74

Volcanoes are a Blast - Working with simple equations 9-11 77

The Many Faces of Energy 8-10 80

Craters are a Blast! 8-10 82