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### Course: Big History Project>Unit 1

Lesson 2: Scale | 1.1

# ACTIVITY: Powers of 10

## Purpose

Together with the video, Powers of Ten, this activity provides a quick lesson on using scientific notation as a tool to simplify some of the massive and minuscule numbers you’ll encounter when looking at things on the extreme ends of a scale.

## Process

Get out of piece of paper and something to write with – you’re going to watch the Powers of 10 video again.
As the video zooms out and in, write the number that corresponds to each zoom. For example, you’ll start at 1, then go to 10, then to 100, and so on. You have to rewrite the number each time. You can’t just add on zeros to the original number. Keep up as long as you can!
When you can no longer keep up, stop the video and watch this Khan Academy video explaining scientific notation.

## For Further Discussion

Why do you think anyone would want to look at the Universe from such great distance? Why would anyone want to look at anything so close? Share your answers in the Questions Area below, and compare your answers with others for a different perspective.

## Want to join the conversation?

• Wonderful film. Interesting production year.
Looking from afar gives a greater perspective. Looking close up reveals details of structures and how things work.
• Have a look at: http://youtu.be/qxXf7AJZ73A
If you like the 1977 version you probably love this one:-)
• To realise how insignificant we are in the grand scheme of things.
• Yeah, it's somewhat humbling, in BOTH directions.
• I think people would want to look at the Universe from a great distance for two reasons. First, it's just simple curiosity about the Universe around us and it's awe inspiring. SEcond, with the way we are treating our planet, we might need to find another place to live one day. So I also think there is the practical part...sort of an Earth Plan B.

As for something really close, knowing more about what makes up everything can hopefully help us understand disease better and how to be healthy.
• Because humans have a natural inclination to explore every detail of the medium they live in, be it big or small.
• Many people (especially professionals) are always looking for answers to their questions and new facts. At the same time a lot of people (this time not especially professionals) want to look at things big and small and marvel at the universe. Some people, like the Khan Team, find the fact that the universe being big is liberating because they find their "everyday stresses" being nothing compared to the universe so they don't matter. I saw that in the Cosmology and Astronomy's Scale of the universe unit:
Don't feel small. We find it liberating. Your everyday stresses are nothing compared to this enormity that we are a part of. Enjoy the fact that we get to be part of this vastness!
• We look at things far away to further expand our knowledge of the universe.
We also look at things close up to understand what is happening inside our body or other objects then, maybe we can relate that to objects in the universe.
• exploring what beyond earth and understanding the endless possibilities thats beyond earth,what could be more cooler than that &looking closely to thing which we usually ignore with our naked eyes and understanding it.