Time and Energy

By Laura Hospitál on Aug 21, 2016

This science experiment by students at Texas School for the Blind and Visually Impaired examines how the time of day affects energy levels.



How does time of day affect how long it will take (speed) walking on the track?


The subjects would walk fastest at night.


Kristen and Valerie found volunteers and inquired about using the track at necessary times. 


  • Track
  • iPad or iPod as stopwatch


  1. Find volunteers.
  2. Have them meet at the track in the morning.
  3. Prepare stopwatches.
  4. Tell them to go and start the stopwatches while are at the rail.
  5. Have students walk around the track 4 times.
  6. When they get to the finish line for the 4th time, measure time.
  7. Complete steps 3-6 at 2:00pm and 7:00pm with the same volunteers
  8. Look at the times and do some investigation about it. – Analyze the data.
  9. Display the data on table, chart or graph.



Excercise data table

Each student had his fastest time for the 7:00 p.m. walk.



Our conclusion was that our hypothesis was correct.  Energy levels were higher at night. 


Ideally, more students would participate and more trials would be done. 

NGSS Standards:

Plan and conduct an investigation individually and collaboratively to produce data to serve as the basis for evidence, and in the design: decide on types, how much, and accuracy of data needed to produce reliable measurements and consider limitations on the precision of the data (e.g., number of trials, cost, risk, time), and refine the design accordingly. (HS-ESS2-5)

Time and energy collage

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