Glossary Terms Science 2018-2019
Terms in this set (24)
a testable prediction for a problem (an educated guess) based on observation(s).
something that you use your "five senses" to determine - how something smells, looks, tastes, sounds, or feels.
is something that you assume based on previous knowledge - such as, you would infer that a bug with wings will fly because you have seen other bugs with wings fly, even if you have not seen that particular one fly.
in an experiment, the factor that you change to see what will happen.
the variable which is changed by the scientist in an experiment.
the variable being tested and measured (you are depending on the independent variable for results!)
in an experiment, the standard for comparison. (what we keep the same)
a variable that tells you both speed and direction.
a ratio of the rises (vertical change) to the run (horizontal change) of a line on a graph.
the rate at which velocity changes.
metric unit of force needed to make a 1 kg object accelerate at 1 m/s2
the ENGLISH unit of force (equal to 4.448 Newtons)
mass, and strength of gravity
a force that resists motion
the state in which the net force of an object is zero.
the sum of all forces acting on an object.
Newton's First Law
an object at rest will stay at rest and an object in motion will stay in motion with the same velocity unless acted on by an unbalanced force
result in a net force on an object that can cause changes in motion.
the property of an object that resists changes in its motion
Newton's Second Law
acceleration is force divided by mass, OR force = mass times acceleration (F = m x a)
Newton's Third Law
for every action force there is a reaction equal in strength and opposite in direction.
energy of position. The energy that is stored in an object due to its position relative to some zero position.
energy of motion. The energy of motion can be calculated using mass and velocity.
Law of Conservation of Energy
energy can never be created or destroyed, but it CAN change in its form. The total amount of energy in the universe is CONSTANT.
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