A strange liquid spills onto your table. Your friend stays to clean it up, while you go get the teacher's help.
What did you and your friend do wrong in this situation?
Tell the teacher BEFORE you clean it up.
100
What is the dependent variable:
You want to see the effect of different types of bleach on the brightness of our clothes.
The brightness of your clothes.
100
If you are pushing a box across the floor, and it is moving, are the forces balanced or unbalanced?
Unbalanced
100
Explain the energy transformations that take place when you eat a protein bar to go and play soccer.
Chemical energy from the food becomes mechanical energy that you kick with!
100
Explain how Newton's first law of motion occurs in Penguin's jazzercise class.
After he jumps, Penguin will continue to move until outside forces (gravity, friction) bring him to a stop.
200
Observation or Inference:
There is mud all over your shoes.
Observation
200
Name the independent variable:
You see the different heights of plants with either no sunlight or a lot of sunlight.
The amount of sunlight
200
Which law explains that if you apply the same force to two objects (one big and one small), then the small object will have more acceleration.
Second Law: F=MA
200
Which has more GPE, why?
a boulder sitting at the top of a hill
OR
a boulder sitting at the bottom of a hill
A boulder at the top of the hill because the more height and mass an object has, the greater the Gravitational Potential Energy.
200
Which has less friction force:
a toy car rolling down a smooth plastic hill
OR
a small cube sliding down a grassy hill
The toy car because rolling friction has less force than sliding friction and the smooth plastic hill because it will have less friction.
300
Observation or Inference:
You must have gone on a hike because of all the mud on your shoes.
Inference
300
How many controlled variables do you need for an experiment?
It depends! It could be only 5, or it could be over 100!
300
If you push a box with 40N of force to the left, and your friend is pushing back with 17N of force to the right, then what is the Net Force acting upon the box?
23N to the left.
300
What kind of energy does a grilled cheese sandwich have?
Chemical Energy
300
In order to represent the direction and magnitude of an object's movement, I would draw a _____________.
Vector
400
Which is more valuable and/or accurate during an experiment: Observation or Inference?
Observation
400
What is the experimental group:
You are trying to see if wearing the color red improves your skills at basketball. So you play 2 games: one wearing your red jersey and one wearing your yellow jersey.
Wearing your red jersey
400
If a man walks at a constant velocity of 12MPH, and then starts to walk faster and faster, the man has increased his ______________________.
acceleration
400
When a person rolls down a hill, their energy is transformed from __________ to ____________.
potential energy to kinetic energy
400
Which would use less force to push, why?:
a 100lb box
OR
a 80lb box
80lb box because objects with less mass require less force to move at the same acceleration/pace.
500
Explain what you do if glass breaks during class.
Tell the teacher, then let her clean it up.
500
Write a hypothesis for this experiment:
I want to see if singing improves test scores.
If you sing during a test, then your test scores will improve.
OR
If you sing during a test, then your test scores will not improve.
500
How many forces are acting on a box that you are pushing across the floor?
4: Gravity, Normal Force, You pushing, and Friction
500
What two things determines the Kinetic Energy of an object?
Mass and Velocity
500
List all of the energy transformations that happen when you:
drink an energy drink
Chemical energy in the drink is transformed to mechanical energy when you go play a sport.