Mission to Mars - 09: Using Electric Power on Mars

Note: *Some* of the following material was covered during our "discussion" sessions, feel free to buzz past those if you already know that material.

LEARNING GOAL: I will create a simple 'energy budget' during today's class.

OPENING QUESTION: How much energy (in Watts) does your hair drier use? (check the tag!)

WORDS O' THE DAY:

• Sol (The Sun's proper name)
• Solar System (Everything that orbits Sol, our sun)
• Mars (The 4th planet from the sun)
• Magnetic Field (Lines of magnetic force)
• Atmosphere (Gas surrounding a planet or <on rare occasions, moons>)
• Atmospheric pressure (the weight of an atmosphere per unit area)
• Lava Tube (A tunnel formed when a solid crust forms over fast moving lava)

WORDS O' THE DAY:

Here's a link to the actual National Geographic Poster of a Future Mars Colony that I have hanging on the wall of my classroom:

Please take a gander at that and *specifically* review the information given there about solar power panels (we'll return to that on Monday). NOTE: There are +/- controls on the upper left of that page that will let you expand/reduce that image.

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I live out in a rural part of Port Orchard. When the wind blows, I lose power... it's a thing.

Fortunately, a MOST Gracious & Humble colleague of mine was kind enough to let me borrow (and then buy) a 4000 watt generator:

Although it can max out at 4000 watts, it can only reliably produce 3500 watts for any length of time.

Let's say you're living in a little habitat in a lava tube on Mars. You're going to create an energy budget for your habitat that is the same that I have to use when the power goes out in the winter time at my house.

That is to say that you can have a total of 3500 Watts of energy available at any one time.

The heater needs to run all the time. My space heater is pretty good and it is rated at 1500 Watts... so I put that in the budget (below) for you. That means you only have 2000 Watts left in your energy budget.

Take a look around your room/home or search the interweb for the amount of power for various items you'd like to have in your 'room' on Mars.

 Item Use Watts Running Total Electric Space Heater Continually Heat Your Room 1500 Lights To be able to See/Study/Read/Work Microwave Oven To Heat/Cook Snacks Your Choice (1) Your Choice (2) Your Choice (3) Your Choice (4)

Examine a few items around your house that you would like/need to have in your habitat on Mars and add them to the list (you can find the wattage listed on the back or bottom of all appliances)

Remember, your total can add up to more than 3500 watts, you just can't run everything at once. Also, you can't' turn off your heater. Ever.

The total of ALL the power you consume at any given time can ONLY be 3500 W.

AEROSPACE AND PHYSICS STUDENTS PLEASE DO THE FOLLOWING:

Then please list the combination of appliances (never adding up to more than 3500 watts please!) you will use during the day while you are relaxing. Be sure to include a running total.

Then please list the combination of appliances (never adding up to more than 3500 watts please!) you will use during the day while you are working/studying. Be sure to include a running total.

Then list the appliances you will use at night. Be sure to include a running total.

Aerospace Students: Please drop a link to that document on our usual submission page HERE and choose the "Energy Budget" activity.

Physics Students: Please drop a link to that document on our usual submission page HERE and choose the "Energy Budget" activity.

PHYSICS STUDENTS ONLY:

Do just a wee bit of research and find the chemists' "recipe" for creating rocket fuel from water. Copy and paste that (with the URL from where you found it) into a Google Doc.

Now do a wee bit more research and find out how much electric current is needed to produce one liter of oxygen gas from the electrolysis of water. Copy and paste that information into the same Google Doc along with the URL from where you found THAT information.

Physics Students - drop that in our class submission folder HERE

Aerospace Students - drop that in our class submission folder HERE

Save your work to your Google drive, make sure you share it with me, and drop a link on our submittal form HERE