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Science

QuestionAnswer
what is an independent variable The variable you change on purpose
What is dependant variable The variable you measure
What is controlled variable Things you keep the same for a fair test
Why is it important to keep controlled variables the same To make sure that the test is fair and only one thing is affected
How do you write a hypothesis Start with if I do this, then this will happen
What is a force When energy is applied to something often causing change
What happens when energy is applied to an object It can make the object move, stop or change shape or direction
What are the three main forces Pull, push and twist
What can forces cause an object to do Accelerate, decelerate, change direction or change shape
What units are forces measured in Newtons
Name two devices that can measure force Spring balanced and scale
What does the length of a force arrow represent The size of the force
What does the direction of a force arrow represent The direction the force is applied
Can multipole forces act on an object at the same time yes
When are forces considered balenced When the forces on a object cancel each other out
What happens to an object when forces are balenced It stays still or moves in a constant motion
When are forces unbalenced When the forces do not cancel each other out
What happens to an object when forces and considered unbalenced It changes speed or direction
What direction must arrows go in for forces to cancel each other out Opposite directions
Who developed the three laws of motion? Sir Isaac Newton.
Created by: Hlgamr
 

 



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