Scientific Method
Variables
Force
Motion
Work
100
What is the first step of the scientific method?
Observation/ testable question.
100
What is a dependent variable?
The thing you are measuring in an experiment
100
What is the unit for force?
Newton
100
What is velocity?
Speed and a direction
100
What is the formula to calculate work
work= force x distance
200
What is the correct format for a hypothesis?
if....then....because!
200
What is a control group?
A group that doesn't experience the independent variable
200
What is the forumla for calculating force?
f=m x a
200
What is acceleration?
A rate of change in velocity.
200
What is the formula for calculating power
power = work divided by time
300
Give us a good example of a proper hypothesis.
Various examples
300
What is an independent variable?
What you are changing on purpose in an experiment
300
According to Newton's Third Law, if I push on the wall with a force of 200 N......
the wall pushes back at me at 200 N
300
A family is driving in a car. They travel 80 km/hr for the first hour, and 40 km/hr for the second hour. What is their average speed?
60 km/hr
300
I perform the same action twice using the same amount of work. How could I increase the power?
Perform the action in less time!
400
What do you do after you conduct an experiment?
form a conclusion
400
Mr. Beattie is trying to see what type of liquid helps plants grow. He know water works but he wantes to try a few others. He waters one plant with water just like normal. He waters the second plant with tea. He waters a third plant with juice. He measures their growth over a one month period. He uses the same amount of liquid for each plant. What is the dependent variable? Independent variable? Control Group?
dv: plant growth iv: liquid cg: water plant
400
A car weighing 2000 kg is traveling at 100 km/hr. A second car weighing 2500 kg is also traveling at 100 km/hr. Which one will be harder to stop? How do you know?
the second car
400
Mr. Beattie moves across the classroom. How can you tell?
Use a reference point!
400
Mr. B moves a science table using a force of 50 N. He moves the table 10 meters. It takes him 5 seconds because he's really fast. How much power has be performed?
50 x 10= 500 500 / 5= 100 watts
500
Provide an example of a science experiment, going through every step of the scientific method!
Good job!
500
Come up with an example of an experiment. Then explain what was the independent variable, dependent variable, and your hypothesis if you were actually going to complete this experiment?
Wowowowowow!
500
Explain how each of Newton's Three Laws relate to force?
Wow!
500
An object is dropped into a free fall towards earth. How fast will it be moving after 4 seconds?
What is 39.2 m/s
500
What are the three ways simple machines change the way we do work?
1. change the amount of force exerted 2. change the distance force is exerted 3. change the direction of the force
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