We did many things in Thursday's science class, we all had to take notes about Gravity, Universal law of Generation, Distance, and Weight, as the following;
Gravity is;
- A force between all objects in the Universe.
- It is dependent on mass and distance
- The closer something is - the stronger is the gravity that pulls it.
There is no gravity, so nothing holds them to the center, which makes them float
Universal law of Gravitation;
- Isaac Newton thought of it
- Gravity exists between all objects in the Universe
- Mass has to be very different to be noticeable
- An example of the one above is if someone cut his or her arm!
The formula for the Universal law of Gravitation is this one.
Mass is;
- The amount of stuff in an object
- Measured with the TBB scale (Triple Beam Balance Scale)
- The units that it is measured in are grams.
This is a Triple Beam Balance, used to measure Newton.
Distance is;
- The amount of space between two different objects
- The equipment used to measured it with are rulers, meter sticks, trundle wheels
- The units it is measured in are meters, kilometers, hectometers, and light-years.
The space in the middle of these two objects is the distance between the objects.
Weight;
- DOES NOT EQUAL MASS!!!
- It is the amount of gravitational force on an object
- It is measured with a spring or force scale
- The measurement for it is Newton.
This is a spring scale used to measure weight that works when an object is hung on the hook, and shows how much weight the object is, so how much gravitational force is pulling it down.
When we were finished with taking the notes, we had to get out our notebooks if we had taken these notes on the computer, or if we had taken notes in our lab notebook we just had to turn to our clock on the front page to see our lab partner.
In case you forgot, the lab partner was number 11.
So when we knew our partners we paired up and sat beside each other, then Ms.D asked us to take from the front counter a small and a big block of wood, with a hook on it, and a spring scale. She then told us to write the numbers that were on our wooden blocks, on our lab sheet, and to then hook them to the spring scale. When everyone had done so, she told us to free our desks and make the big wooden block go around the table by pulling it with the spring scale, and told us to observe what happened to the measurements on the spring scale but to not write an observation. She then made us do the same thing over again with the small wooden block, and then both together, and with every different try, the scale's measurement was different. We then made sure that we spoke and asked any question we had on the lab paper, and we ran over the instructions and grading. Then we put everything back and she gave us some time to write our Purpose Question, and decide what were the IV, and DV, for this lab according to the purpose question. She then made us write our Hypothesis, but she did not tell us whether the IV and DV were right or wrong, and will only tell us at the end of the lab.
The work we had to do was similar to this;
Purpose Question: What are some of the factors that affect friction pulling a wooden block across different surfaces?
IV: YOUR CHOICE TO FILL IN
DV: YOUR CHOICE TO FILL IN
Hypothesis: YOUR OWN CHOICE TO FILL IN, but to do at LEAST three guesses.
We then put everything back and packed up, she dismissed us and that was the end of the class.
Hope you enjoyed reading my Blog Post,
The next scribe (if there is any) is....DRUM ROLL.........Ben!
