Forces
a push or a pull that acts on an object
force
a change in the position of an object
What is motion?
These objects are needed to build a pendulum.
What are a string and a bob?
When conducting an experiment it is okay to test all variables at once.
True or False?
False
A mass at the end of a pendulum.
What is a bob?
If you apply force to a wagon, it will keep ________.
What is rolling.
This must happen to make an object move.
What is apply a force?
Changing the weight of the bob increases the number of swings of the pendulum in 15 sec.
True or False?
What is false?
Any variable that is not allowed to change in an experiment.
What is a controlled variable?
An arm with a mass on one end that is free to swing back and forth in response to gravity
What is a pendulum?
Force can be used to change the __________of a moving object.
What is speed?
This is the only way to make a moving object stop.
What is apply a force?
Changing the height that the bob is released does not change the number of swings in 15 seconds.
True or False?
True
The horizontal number line of a two-coordinate graph
What is the x-axis?
Anything you can change in an experiment that might affect the outcome.
What is a variable?
A pulling force that draws objects towards the Earth's core.
What is gravity?
If the force of gravity is applied to an object, the motion will go ____________.
What is downward?
A grandfather clock can operate without electricity because of this force.
What is gravity?
A scientific test where only one variable can change.
What is a controlled experiment?
An estimate of a future event based on data or experience.
What is a prediction?
When two equal forces act on an object in opposite directions, the forces are _____________.
What is balanced?
A force applied to an object causes it to _________ while it is moving.
What is accelerate or go faster?
This is the final conclusion of the pendulum investigation.
What is the shorter the string, the more swings of the pendulum or the longer the string the less swings of the pendulum?
The variable you control the value of in an experiment.
What is an independent variable?
The standard unit for measuring force in the metric system.
What is a newton?