Monday, 7 October 2013

From Essays to Circuses- Bl. 3

Block 3

Scribe Post- October 1st, 2013

The agenda for today:

Today, Mr. Pro has showed us a document in which he showed us how he had done marks on our essays to point out mistakes like grammar errors, spelling mistakes, or unnecessary sentences in our essays.

The following are few examples of how he marked our mistakes:

Our Second Energy Circus

Today, Mr. Pro had prepared us a second 'Energy Circus', in which we explored many more energy forms, and did more investigations.

Investigation A: ELASTICS

Stretch of Elastic vs Distance of the Elastic's Travel (by centimeters)


1.             Tape the ruler to the desk so it’s perpendicular to the side of the desk.
2.              Position the front of the elastic to the side of the ruler.
3.              Pull the elastic so it is long as possible, but it is not stretched.  Record this value.
4.              Stretch the elastic 2cm.
5.              Let go of the elastic.
6.              Measure the distance from the base of the desk below the ruler to the final landing            position of the front of the elastic.  Record the distance.
7.             Repeat steps 4 - 6 for stretches 4, 6, 8, 10 and 12 cm.

Investigation B: HOT PLATE

Time vs Temperature Change


1.             Set both dials on the hot plate to level 8.  
2.             Put 250 mL of water into the empty pan.
3.              Put the thermometer into the water and wait until the temperature doesn’t change.              Record the temperature.
4.              Put the pan on the hot plate.
5.              Record the temperature every 1 minute.

Investigation C: CHIPS

Chips vs Temperature


1.             Break the potato chip into small, medium and large sized pieces.  Turn the scale on and push tare.  Use the scale to find the mass of the potato chip pieces.  Get a range from (0.1 to 0.7g).  Record the masses.
2.             Measure 5 mL of water using the measuring cylinder, and pour it into the test tube.
3.              Put the thermometer into the test tube.
4.              Wait until the temperature reading on the thermometer doesn’t change.  Record                  the temperature.
5.              Light a match.
6.              Light the alcohol burner using the match.
7.              Use the tongs to grab the smallest piece of chip.
8.              Hold the chip over the flame until it’s on fire.  Then, your partner can blow out the            flame on the alcohol burner.
9.             Use the test tube holder to hold the test tube with the water and thermometer in it              over the flaming puff until the flame goes out.
10.          Record the maximum temperature on the thermometer.

Investigation D: ROCKETS 

Amount of Water vs Water Rocket Height


1.              Position the rocket vertically close to the ground.
2.              Position two meter sticks stacked vertically above each other.
3.              Pump the rocket 8 times.  For the first trial, there is no water in the rocket.
4.              Pull the trigger on the rocket and launch it vertically.
5.              Observe and estimate how high the rocket travelled in tens  of cms.
6.              Repeat steps 1-5 except before step one, measure 5mL of water using the                          measuring cylinder.  Add the water to the rocket using the funnel.  
7.              Repeat steps 1-6 for 10, 15, 20, 25, and 30 mL

Investigation E: SOCCER BALL

Investigation of Pressure vs Height Bounced Back


1.             Pump up the ball with the pump until it’s really bouncy.
2.              Drop the ball from 1.0 m
3.              Measure the height of the bounce back.
4.              Release air from the ball using the needle for 3 seconds.
5.              Repeat steps 1-4.

Investigation F: Batteries

Number of number of batteries /# vs voltage /V


1.              Put the batteries in series (one after the other alternating positive and negative).
2.              Hook up the voltmeter in the circuit and measure the voltage.
3.              Start with one battery and make circuits up to 6 batteries.

Thanks for reading!

Marcela Torres :)


  1. Good, but don't forget to include some of the data collected.

  2. And include the measuring skills.


Please write positive comments or constructive feedback in full sentences.