Graphs/Class Procedures
Scientific Method
KE and PE
Newton's 3 laws
Mystery!
100
Which is the X and which is the Y axis on a graph?
X axis is along the bottom/horizontal. Y axis is along the left side/vertical
100
In the following testable question, what is the IV and what is the DV? How do you know? How does the amount of mercury in water affect the number of eggs laid by salmon?
IV = amount of mercury (The experimenter/scientist can change or control the IV, it is the CAUSE). DV = number of eggs laid by salmon (We cannot control this, we can only measure it, it is the EFFECT).
100
What is KE? What is PE?
KE = Energy of movement/motion. PE = Energy due to the position of an object.
100
What is Newton's First law? Describe exactly what it means.
Inertia. An object in motion will remain in motion with constant velocity, and an object at rest will remain at rest until an external force acts upon it.
100
What are the classroom consequences?
1 - Warning 2 - Same-day meeting in room 307 right after school 3 - Kick out of class, parent/guardian called, go to Sharese, get a detention.
200
What is the purpose of a Key in a graph?
To tell you what the symbols in the graph stand for.
200
What is the format we use to write a hypothesis?
If ______ then ________ because _________.
200
What is the relationship that KE and PE have to each other?
It is inverse/indirect. As one goes up, the other goes down.
200
What is Newton's second law? What are the units used in this law?
F = ma Force is measured in Newtons mass is measured in kilograms acceleration is measured in m/s/s or meters per second squared.
200
What is the goal of this class?
To expand your educational opportunities after high school. Also to help you find success on the science portion of the ACT.
300
What does a Direct correlation look like? What does an Indirect/Inverse correlation look like?
Direct correlation goes UP from left to right. Indirect/Inverse correlation goes DOWN from left to right.
300
What is the correct form for a testable question? Include where the IV & DV goes.
How does ____(IV)_____ affect _____(DV)_____?
300
As a basketball is dribbled once, how does the KE and PE change? - 6 feet in the air held by player - 3 feet in the air on the way to the floor - Hits the floor - 2 feet in the air on way back up to player's hand - Back in player's hands at 6 feet up.
When the ball is 6 feet in the air, it has 100% PE and no KE. At 3 feet, going down, it has 50% PE and 50% KE. When the ball hits the floor, it has no PE and 100% KE. At 2 feet going back up to the player's hand, it is gaining more PE and losing KE. Back in the player's hand it once again has 100% PE and no KE.
300
An airplane's engines both fail and it is in a free fall nose dive. It weighs 1000 kg. What is the force with which it is falling? Describe what you did to get that answer.
Force = 9800 Newtons. mass * acceleration = Force
300
What are two things that you are expected to do every single day when you enter the classroom?
- Check your mail - Get your binder - Quietly sit and start the catalyst - Remain in your seat - Turn papers into the file folder with your name on it if we had homework the night before.
400
What must you be doing in order to get your catalyst sticker each day? Also, how many points is each catalyst worth?
In your seat, on task, on time, silently working on the catalyst, not talking. Catalyst with sticker = 2 points. Without sticker = 1 point.
400
In order, list the 6 steps of the Scientific Method.
1) Define a testable question 2) Gather research 3) Make a hypothesis 4) Experiment 5) Analyse Data 6) Form a conclusion
400
Why must the first hill of a roller coaster ALWAYS be the tallest?
Because it will only lose potential energy. If the second hill was taller than the first one, it wouldn't make it all the way up and over that second hill because it only had as much potential energy as the first hill gave it.
400
What is Newton's third law? What is an example of it?
Every action has an equal but opposite reaction. You sit on your chair with downward force, your chair puts an equal but upward force back on your bottom. You punch the wall, the wall hits you back with an equal but opposite force, this is why it hurts when you punch a hard wall.
400
How do the vocabulary sheets work? Can you use them on the test?
You write down the vocab and are able to use them on the test.
500
1) What is the policy for Class Points? When can you earn them during each class period? 2) How many do you need each Tues & Thurs? 3) And what is the reasoning behind doing it this way?
1) You can get up to 4 class points each day. 1-Catalyst/PRM, 2-Taking notes, 3-Lab or activity, 4-End of class procedure 2) You need 9 every Tues & 6 every Thurs in order to get the Opportunity slip drawing on those days. 3) We do it this way to reward good behavior and to make the class point system more meaningful.
500
What is the point of an abstract? What are two characteristics of an abstract?
Abstract = summary of experiment. - 100 words or less - Includes procedures - State Results / Conclusion - Gives goal statement / testable question - Gives an introduction to the experiment.
500
What is an experiment that you could perform that shows the difference between KE and PE?
You could use a pendulum like we made in class.
500
Tell how each of Newton's 3 laws of motion applies to the following situation: A penny is thrown from the top of the Sears Tower.
1st law: The penny will want to remain in the same downward fall until another force (the concrete below) stops it. 2nd law: To calculate the force of the penny, you take the mass of how much the penny weighs and multiply that by acceleration of gravity, which is 9.8 m/s/s. 3rd law: When the penny pushes down against the air, the air is pushing an upward force on the penny. This explains why the penny wouldn't seriously injure anyone on the ground below.
500
When we watched the video of the guy ripping the tablecloth from under several glass cups stacked on each other, what force helped the glasses not fall? Why?
Inertia - They wanted to remain at rest.
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