THE SOLUTION TO Weekly Challenge 7: Spaceship Earth
Posted by DrJeff on September 15th, 2009
Filed under 1.1. Dr. Jeff's Weekly Challenge, 1.2. Solutions to Weekly Challenges, 4. The Earth, 5. Space Science, 5.1. Our Solar System, 5.1.1. The Sun, 5.4. Milky Way Galaxy, 5.6. The Universe
Copyright 2009 | About this blog
Read Original Challenge HERE.
Photo caption: Computer-generated image of the Milky Way galaxy based on real data.
This post is a Dr. Jeff’s Weekly Challenge. It was requested by (teacher extraordinaire) Jami Lupold and her class in the great city of Houston, Texas, USA.
If you’re a teacher and your class has an idea for a blog post, slip me a note!
Last week I gave you a scare. It happened when I told you that you’re really on a spaceship hurtling through space. I was in the midst of describing all of Earth’s motions—it spins, it orbits the Sun, the Sun orbits the center of our galaxy carrying Earth and the Solar System along for the ride—and that’s when I saw panic on your face. You started to get a bit dizzy, so I turned on the “fasten seat belt sign” in light of all the conceptual turbulence ahead. To keep your mind off all the spinnin’ and revolvin’ I gave you an assignment to calculate Earth’s speed—your speed—due to these three motions. Does this all ring a bell? No? Why don’t you go and re-read the original challenge from last week, so you can refocus.
Good. Now that you’re back. Let’s get to the answers. Did I mention this week’s challenge was in our in-flight magazine in the seat pocket in front of you? By the way, I see you dug your fingernails into your seat, and your fingertips seem a bit blue. (Hope the answers don’t send you into a panic.)
And now the answers—
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THE SOLUTION TO Weekly Challenge 6: Today’s Special in the Cosmic Kitchen is …
Posted by DrJeff on August 24th, 2009
Filed under 1.1. Dr. Jeff's Weekly Challenge, 1.2. Solutions to Weekly Challenges, 4. The Earth, 5.6. The Universe
Copyright 2009 | About this blog
Read Original Challenge HERE.
This post is a Dr. Jeff’s Weekly Challenge.
Welcome humans nice folks. We have assumed you are here for the answer to Weekly Challenge 6. Men in black team #26,342 is therefore now en route to your home. If you don’t know why, before reading any further we recommend (with great strength) that you read Weekly Challenge 6. Our team is rolling (very fast).
And now the answer—
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THE SOLUTION TO Weekly Challenge 5: Dr. Jeff’s Interplanetary Travel Agency
Posted by DrJeff on August 7th, 2009
Filed under 1.1. Dr. Jeff's Weekly Challenge, 1.2. Solutions to Weekly Challenges, 4. The Earth, 5. Space Science, 5.1. Our Solar System, 5.1.2. The Moon, 5.1.3. Planets, 6. Cool Spacecraft
Copyright 2009 | About this blog
Read Original Challenge HERE.
This post is a Dr. Jeff’s Weekly Challenge.
Nice to see you again! Now that you’re back from your interplanetary romp through the Solar System, let’s see those cool photographs you took for the Dr. Jeff’s Interplanetary Travel Agency tour brochure.
[Hmmm …. silence.] You there?? Earth to my contracted photographer, you seem to be processing all this a bit slowly. I suspect you’re suffering from ‘rocket lag’. It’s perfectly understandable after traveling over 10 billion miles and visiting 7 worlds. I don’t think any photographer has ever been this dedicated. You’re clearly worth more than I’m paying you. So take a load off, and first re-read Weekly Challenge 5 to get back up to speed.
And now the answers—
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THE SOLUTION TO Weekly Challenge 4: You Want Me to Do What With a Bathroom Scale?
Posted by DrJeff on July 8th, 2009
Filed under 1.1. Dr. Jeff's Weekly Challenge, 1.2. Solutions to Weekly Challenges, 1.4. Teachable Moments in the News, 4. The Earth, 6. Cool Spacecraft
Copyright 2009 | About this blog
Read Original Challenge HERE.
This post is a Dr. Jeff’s Weekly Challenge and a Teachable Moment in the News.
Ok, I know you’ve been perplexed for a week. You’ve been patiently waiting for me to read my bathroom scale on top of my 210 mile high mountain that apparently even the U.S. Geological Survey knows nothing about (I checked at their web site.) Wait! You say you have no clue what I’m talking about?? Hey, you’ve got to read Weekly Challege 4 FIRST! None of this lazy stuff going right to the answer.
Go read Weekly Challenge 4, think about it for a while, and come back. I’ll wait right here for you.
And now the answer—
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THE SOLUTION TO Weekly Challenge 3: What Can You Do With a Humongous Piece of Xerox Paper?
Posted by DrJeff on June 23rd, 2009
Filed under 1.1. Dr. Jeff's Weekly Challenge, 1.2. Solutions to Weekly Challenges, 1.5. Dr. Jeff's Jeffisms, 3. Science Education, 4. The Earth, 5. Space Science, 5.1. Our Solar System, 5.1.1. The Sun, 5.1.2. The Moon, 5.4. Milky Way Galaxy, 5.5. Other Galaxies, 5.6. The Universe
Copyright 2009 | About this blog
Read Original Challenge HERE.
This post is a Dr. Jeff’s Weekly Challenge and a Dr. Jeff’s Jeffism.
Last week on BotU, your challenge was to take an imaginary, truly humongous piece of xerox paper—but with normal xerox paper thickness—and figure out how many times you’d need to fold it in half so the folded thickness is the height of you, the Statue of Liberty, the Empire State Building, and Mount Everest. For those that really wanted to challenge themselves, I invited you to keep folding so it would be thick enough to reach the Moon, the Sun, the nearest star, and beyond.
How’d you do?
BUT WAIT! If you haven’t yet read Weekly Challenge 3, DON’T LOOK AT THE SOLUTION HERE JUST YET! First read Weekly Challenge 3, or I’ll take back my paper.
First, a word from our sponsor—
You Want Me To Do What With a Bathroom Scale?
Weekly Challenge 4 to be posted Monday, June 29, 2009
Other Posts coming soon:
A Voyage in Corpus Christi
Twinkle Twinkle Little Star, History Tells How Far You Are
Lessons of Earth
MESSENGER: Target Mercury
And now the answers—
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THE SOLUTION TO Weekly Challenge 2: People People Everywhere
Posted by DrJeff on June 9th, 2009
Filed under 1.1. Dr. Jeff's Weekly Challenge, 1.2. Solutions to Weekly Challenges, 4. The Earth, 4.1. Environment and Climate Change, 4.2. General Biosphere
Copyright 2009 | About this blog
Read Original Challenge HERE.
This post is a solution to a Dr. Jeff’s Weekly Challenge.
Have you figured out how many new human beings will be on the planet a year from now? It was Weekly Challenge 2 that I posted last week. (Actually one week has already gone by.) I hope you’ve not been staring endlessly at the World Population Clock.
But if you haven’t yet read Weekly Challenge 2, DON’T LOOK AT THE SOLUTION HERE JUST YET! First read Weekly Challenge 2, or I’ll deduct your existence from the World Population Clock (like that will make a difference.)
A word from our sponsor—
What Can I do with a Humongous Sheet of Xerox Paper?
Weekly Challenge 3 to be posted Monday, June 15, 2009
And now the answer—
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THE SOLUTION TO Weekly Challenge 1: A Pound of Ants and the Capabilities of Intelligent Biomass
Posted by DrJeff on June 1st, 2009
Filed under 1.1. Dr. Jeff's Weekly Challenge, 1.2. Solutions to Weekly Challenges, 1.3. Driving With Jordi, 4. The Earth, 4.1. Environment and Climate Change, 4.2. General Biosphere
Copyright 2009 | About this blog
This post is a solution to a Dr. Jeff’s Weekly Challenge.
For those of you that read last week’s Weekly Challenge 1 and are now waiting on the edge of your seats for the answers, well here they are. For those of you that haven’t yet read Weekly Challenge 1, DON’T LOOK! Go directly to the challenge and read it first, do not pass go, and do not collect $200.
And now the answers—
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