Show:
Kinetic and Potential energy
Speed and Motion
Balanced and Unbalanced forces
Gravity
Scientific method/ Nature of science
100
What is potential energy?
Potential energy is stored energy.
100
What is speed?
The speed of an object is a measure of how far something moves in a given amount of time.
100
What is force?
Force is simply a push or a pull.
100
What is gravity?
Gravity is a force of attraction between objects due to their mass.
100
What is a scientific method?
Scientific methods are ways in which scientist anwser questions and solve problems.
200
What is kinetic energy?
Kinetic energy is energy in motion.
200
What is motion?
Motion is a change in position over time.
200
What is a net force?
A net force is the combination of all the forces acting on an object.
200
Are planets round because of gravity? True or False.
True.
200
How are scientific methods used?
Scientific methods are used to study any ascpect of the natural world.
300
What is energy?
Energy is the ability to do work or to cause a change.
300
What is vector?
Vector is a quantity that has both size and direction.
300
How is force made?
F=ma Or, Force equals mass times acceleration.
300
What is free falling?
A free fall is whan gravity is pulling down and no other force is acting on it.
300
Are scientific methods used in physical science?
Yes scientific methods are used in phsical science.
400
How is mechanical energy made.
Mechanical energy is made of kinetic energy plus the potential energy due to position.
400
True or False. To calculate speed you first need to find the mass of an object.
False.
400
Newtons first law states that objects maintain their velocity unless......?
Newtons first law states that objects maintain their velocity unless, they experence an unbalenced force.
400
The acceleraction due to gravity is the same for all falling objects when there is no air resistance.
True.
400
A _____ must be tested to see if it is supported. What is the missing word? Problem/hypothesis/variable.
The missing word is hypothesis.
500
What is the law of conservation of energy?
The law of conservation of energy states that energy can neither be created or destroyed.
500
How do you find average speed?
To find average speed you divide distance by time.
500
What is another name for Newton's first law?
Inertia.
500
Gravitational force is weaker between objects are closer together. Is this true or false, why or why not?
False, gravity is stronger when objects are closer.
500
A good scientific ______ can be repeated by someone else and the same results will be found. What is the the missing word?
The missing word is experiment.