Science, Friday, June 16

Sound

Watch the first eight minutes of the following video:

Questions:

1) What is sound?

2) What is an oscilloscope?

3) Why is an ear cup-shaped?

4) How much faster does sound travel through metal than air?

5) How are Slinkies perfect for showing how sound waves travel through the air?

6) What is an echo?

7) Explain how our ear works.

Science, Tuesday, June 6

 

How Sound Travels Through Different Media

Watch the following video:

Questions:

1)  Using a drum and a piece of paper, how can you prove that sound waves vibrate?

2) Can sound travel through a solid? What would happen if you placed a stethoscope on a tabletop and listened as another person banged on the table with sticks?

3) In this video, scientists put five tonnes of plastic explosives in the ground. Explain what happened during this experiment in detail.

4) What is the speed of sound in the air?

5) What is the speed of sound in the ground?

6) What is the speed of light?

Science, Monday, June 5

Sound

Watch the following video:

1) Knowing that sound is a wave is important. Explain why.

2) Sound is a longitudinal wave. Explain.

3) Explain how you hear a sound on your phone when you get a text message or incoming call.

4) Sound waves are sometimes referred to as pressure waves. Explain.

5) How does a microphone work?

6) How do our eardrums work?

7) What is pitch?

8) When do humans hear best?

9) What happens as humans get older?

10) How do building security companies take advantage of this?

11) What does ultrasonic mean?

12) What does infrasonic mean?

13) How do we calculate intensity?

14) What happens when we hear a sound that is above one watt per square meter?

15) What is the relationship between loudness and intensity?

16) What is the intensity difference between 0 bels and 1 bel?

17) What is a decibel unit? Why do we use decibel units?

18) What happens the closer you get to a sound?

19) What is the Doppler Effect?

 

Science, Thursday, June 1

The Scientific Method is Crap

Watch the following video:

1) What are the steps in the scientific method?

2) What are the problems with using the scientific method? Explain each problem in detail.

3) As a culture, why do we fear science? Explain the three reasons why.

4) What is the cycle of scientific thinking?

5) What makes scientists different from other people?

6) Why is the cycle of scientific thinking better than following the scientific method?

7) There are only three things that can happen with this better model for science. What are these three things?

8) According to this scientist, you don’t have to be an expert to do science. Explain what is good enough.

Science, Tuesday, May 30

Artificial Intelligence

Watch the following video:

Questions:

1) Tell me about the games Chess and Go as it relates to today’s concept of artificial intelligence in computers.

2) A.I.  can create music. How?

3) Tell me about speech engines.

4) How does all of this work? Use a baby as an analogy as to how A.I. computers learn.

5) What is an artificial neural network?

6) What is the limiting factor of the human brain?

7) How big can an artificial brain be?

8) Why won’t A.I. machines need humans at the controls?

9) Why is this speaker worried?

10) How does the speaker use the story of a colony of ants to make his point?

Science, Friday, May 26

Elon Musk and Artificial Intelligence (A.I.) Advancement

Watch the following video:

Questions:

1) “We are summoning the demon,” warns Elon Musk. What does he mean?

2) What is at the heart of the black box quantum computer in Burnaby, B.C.?

3) The quantum computer gets faster with each generation (every new computer built). Provide an example of its speed improvement from year to year by comparing the speed to that of a donkey and a jet. Also, the speed from New York to Los Angeles.

4) According to Elon Musk, what happens if human intelligence is exceeded by A.I. computers?

5) In this video, a prediction is made about what will happen within 15 years. Explain.

6) Are you worried about artificial intelligence in computers? Explain why or why not.