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Physical science Terms to know
Terms in this set (48)
An objects change in position relative to a reference point
an object that appears to stay in place
a push or pull exerted on an object in order to change the motion of the object: has a size & direction
the SI unit for force (N)
the combination of all of the forces acting on an object
greatness of size or amount
a force is a _______ or ________ on objects
push or pull
all forces have both ________ and ________________.
size and direction
all forces act on _________________
combining all forces acting on an object is the _________ ____________
what can change for an object when and unbalanced force is applied?
change direction, starts to move, and changes speed
when forces are in _______________ directions you subtract
when you combine forces you ___________
scientists use ____________ to express force.
A force that opposes motion between two surfaces that are in contact
what are two ways that surfaces can move
slide or roll
a force of attraction between objects that is due to their masses
a measure of gravitational force exerted on an object, its value can change with the location of the objects in the universe
a measure of the amount of matter in an object
What does all matter have?
gravity is a result of...
mass and distance between
How do you overcome gravitational force
by applying another force
What are two things that help determine the amount of gravitational force
mass and distance
As mass increases what happens to the gravitational force?
it gets stronger
why are astronauts able to bounce on the moon
there is not a large enough gravitational force to keep them from floating away
why don't you have gravitational force towards the Sun like the Earth
your mass is too small
any material that attracts iron or materials containing iron
one of two points, such as the ends of a magnet, that have opposing magnetic qualities
the force of attraction or repulsion generated by moving or spinning electric charges
where is a magnetic field found?
around the magnet
Where is the magnetic field the strongest?
at the poles of a magnet
can you turn off a magnet
can you turn off an electromagnet?
how many domains are aligned in a material that is magnetic
what is the magnetic name for a push force
particles that have a positive charge ______________ energy
the passing of genetic traits from parent to offspring
the trait observed in the first generation when parents that have different traits are bread
A trait that reappears in the second generation after disappearing in the first generation when parents with different traits are bred
one set of instructions for an inherited trait
one of the different forms of a gene that governs a charactoristic
An organism's appearance or other detectable characteristic
the entire genetic makeup of an organism; also the combination of genes for one or more specific traits
the likelihood that a possible future event will occur in any given instance of the event
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