Experimental Design
What is a Hypothesis
Possible answer
Why are experiments replicable?
So that other people can check our work
What is potential energy
The energy and object has stored with in it when the object is at rest
what is a contact force
a force that makes physical contact with the object
What is mass?
The amount of matter and object has.
In an experiment the variable the scientist changes or the test variable is called what?
the Independent variable
Why do we write down our procedures in a scientific investigation?
to be able to remember what we did and to tell others what we did.
What is kinetic energy
the energy of motion
What is a non- contact force
a force that interacts with an object without physically touching them
what is the relationship between gravity and distance
the more distance the less gravity the less distance the more gravity
What variable stays the same throughout the experiment?
The Control variable
What is a scientific law
A description of a natural phenomenon
What is the law of conservation of energy
Energy can not be created or destroyed
what are the three non-contact forces?
Gravity, magnetics, electrical
what is the relationship between mass and gravity
the more mass the more gravity the less mass the less gravity.
In an experiment the variable that changes in response to other variables or the outcome variable is called what?
The Dependent variable
What is a scientific theory?
An explanation of a natural phenomenon
How do kinetic energy and potential energy form a system?
energy constantly transforms from one type to the other as objects come in and out of motion
What non-contact force only attracts metal?
Magnetism
Why does the planet not move with you when you jump?
your mass and gravitational force are to small to move the planet
Why do we have a control group.
To compare to the results of the test group to see if there were any changes.
Why is science being changeable a good thing?
because it allows for new evidence, discoveries, and technology to advance our understanding of the natural world
How can energy be lost in a system?
when an object is in motion i could experience friction which will turn some of the kinetic energy into heat energy
What is the difference between balanced and unbalanced history.
If the forces are balanced then the object will not move. But if the forces are unbalanced then the object will move
How are mass and weight of an object affected by gravity?
the mass does not change
the weight will change depending on the gravitational pull