Wednesday, November 16, 2011

   1. What are two inventions that Nikola Tesla is known for? the Tesla coil and the radio        
   2. What is the Tesla Coil used for? transmit wireless energy.     
   3. What was Tesla trying to do when he tried to put electricity through the Earth? make free and wireless electricity.
   4. What did Edison do to try and get people to be afraid of Tesla and his electricity idea. he made Teslas  ac look dangerous.
   5. What is the difference between DC (direct current) and AC (alternating current)? dc moves like a river ac goes back and forth.
   6. Who were some of Nikola Tesla's famous friends? mark twain
   7. What did Tesla think about using fuels like oil to power our lives? He thought it was wasteful.
   8. Where did Tesla think energy could be used from? wind.

Monday, November 14, 2011

 Hypothesis 1-I think that when Mr. Randy drops both rocks: the bigger one will hit first



When Mr. Randy dropped both rocks what really happened was:  they dropped at the same time


Hypothesis 2-I think that when Mr. Randy drops both pieces of paper, the paper will: they will not hit at the same time


When Mr. Randy dropped both pieces of paper what really happened was: the didn't hit at the same time.

Vocabulary Words:
Law of Gravity: All objects have gravity

mass:  how much matters in an object

acceleration: getting faster

inertia
:amount of force a moving object has

Monday, November 7, 2011

Physical/Chemical Change

hypothesis 1-I think that when Mr. Randy puts a flame on a balloon filled with air the balloon will pop.


When Mr. Randy put a flame on a balloon filled with air what really happened was: I was right it did pop but it wasn't a loud pop.It was like a puff of air.

Hypothesis 2-I think that when Mr. Randy puts a flame on a balloon filled with some water the balloon will: It will not pop.


When Mr. Randy put a flame on a balloon filled with some water what really happened was:I did not pop both times we tried it but it did leave a burn.

Vocabulary Words: heat: when atoms move faster

atom: the smallest particles that make all matter.

absorb: Take in.

pressure
: when the atoms push out against something.


explosion:a sudden realease of pressure.