Methods of Science
What is the SI unit for Distance?
Meters (m)
What is the SI unit for acceleration?
meters per second squared (m/s/s) (m/s2)
Newtons first law states the an object in motion stays in motion unless...
Acted on by an unbalanced force
What are the SI units for energy
Joule
Describe the motion (in relation to speed) of the particles when you heat up a substance.
Move faster
Convert 25 mg into kg
0.000025 kg
A student starts their morning at their house. When they leave their house they walk 10 meters north, turn right and walk 20 meters east, then realize they forgot their phone and turn around and walk in a straight line 22 meters back to their house. What is their displacement?
0 meters
Newtons 3rd law states that forces act in _____________ and _______________ directions
equal & opposite
The Transfer of energy through a fluid where the hot material rises and the cooler material sinks.
Convection
A ______________ is an object that allows thermal energy to pass through it easily
Conductor
What is the name of the variable that is changed as a result of the experiment?
Dependent Variable
What is the Velocity of a car that has traveled 50 meters north in 2 seconds.
25 m/s north
2 people are playing tug of war. Person 1 pulls to the left with 20 newtons of Force. Person 2 pulls to the right with 18 newtons of Force. What is the net force? (include direction)
2 newtons to the left
Food is a form of ______________ energy
Chemical
Definition: The average kinetic energy of all the particles in a substance
Temperature
What is the missing step of the scientific method?
1) Make an observation
2) Conduct background research
3) _____________________
4) Conduct experiment
5) Analyze Data
6) Draw a conclusion
Create a Hypothesis
A car that weighs 1500 kg and is traveling at 10 m/s. What is the cars momentum?
15000 kg*m/s
A force that opposes the direction of motion
Friction
A machine that combines 2 or more simple machines to make work easier.
Compound machine
The second law of thermodynamics states that heat always flows from __________ to _____________ unless work is done
Which type of graph is best used for comparing a change in data over time?
Line Graph
What direction is the force of an object with centripetal acceleration?
Toward the center
What are the 2 variables that gravity depends on?
Mass & distance
Gravitational Potential Energy depends on an objects __________ and __________ above the ground. (2 answers)
Mass and Height
The amount of energy required to raise the temperature of 1 kg of a substance by 1 degree celsius is an objects what?
Specific heat