Time Travel Quiz


Time Travel Test 1st Hour

Time Travel Test 2nd Hour

Time Travel Test 6th Hour


After the Test:

Drake Question
Use the following article to answer the questions below on the Drake Equation and Exoplanets:
a) PLEASE WRITE THE QUESTION
b) Answer each question in complete sentences. 

ARTICLE: Estimating The Odds Of Finding E.T.
  1. As of March 2014, how many exoplanets have been confirmed according to this article?
  2. Create a two-column table that identifies each "variable" in the Drake Equation and explain each.
  3. What does the acronym SETI represent and what is their mission?
  4. Explain what the Drake Equation proposes to do?
  5. When was the first exoplanet discovered? What was the name of this planet?
  6. Where do astronomers believe that they can find life in our solar system?
  7. What is the observatory in Arecibo doing to aid in the search for exoplanets?
  8. Which orbiting device is responsible for discovering most new exoplanets?


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Time Travel Notes:

The fundamental theory of physics that deals with time is Einstein’s theory of special relativity.

Every particle traces out a worldline in space-time.  If its velocity is constant, its worldline would be straight.

The worldline of a particle lies within the lightcone, since no particle can travel faster than light.

Time is the fourth dimension
  1. Time exists as a block, quite unlike our psychological perception of time.
  2. Time is relative–time slows down for moving particles.
  3. Events simultaneous to one observer need not be simultaneous to another.
  4. Causality is preserved.
  5. The cosmic speed limit is the speed of light.
  6. ​Time moves forward in a straight line (worldline).
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A CTC is a worldline that loops back onto itself.  At some stage, the particle has to travel faster than light.

In special relativity, if one could travel faster than light, one could also go back in time.

But faster-than-light travel is forbidden.

To explain the force of gravity in terms of curvature of space-time, Einstein came up with the theory of general relativity.