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Science Vocabulary Bingo Ch. 10 Forces

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## Science Vocabulary Bingo Ch. 10 Forces

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**A _______ ______ is a place or object used for comparison to**determine if something is in motion. • An object is in motion if it changes position relative to a ________ _____. =reference point**Mass x Velocity = __________**• Newton called it “a quantity of motion” =Momentum**An ________ _________ can**cause an objects velocity to change… When the net force on the object is NOT zero Unbalanced Force**________ is speed in a given direction.**The car was traveling 75 mphNorth on the 405 freeway. =Velocity**An object at rest will stay at rest, an object in motion**will stay in motion. This law of motion can be summed up in one word… • Inertia**In general, the force that two surfaces exert on each other**when they rub against each other. • Smooth surfaces produce less _____ than rough surfaces. • =Friction**The force that pulls all falling objects toward earth…**• gravity**When Matter returns to its original shape after it is**squeezed or stretched….. • Waist band • Sponge =Elastic Force**If the vehicle goes 0 – 100 mph in 5 seconds, find the**vehicles acceleration. • 20 mph/sec**Friction that occurs when an object rolls over a surface**• Ex. Tires on a road • Rolling friction**Equal forces acting on an object in opposite directions,**and does not cause motion… Balanced forces**For every action there is an equal and opposite reaction**• =Newtons 3rd Law of Motion**Any force that causes an object to move in a circle.**Ex: a Satelite around earth A roller coaster Centripetal force**Graph**• Speed stays the same every second. =Constant speed**The rate at which velocity changes…**• Examples: speeding up, slowing down or changing direction =Acceleration**This is an object that orbits the earth. An object that**travels around another object in space is called… • Satellite**A push or a pull is a …**And it has both direction and magnitude =force**________ __ ____ _______**states that the force of gravity acts between all objects in the universe. Universal Law of Gravitation**A bicyclist travels 50 km in 2 hrs. What is the bicyclists**average speed? 50km/2hrs =25 km/hr**When all forces acting on an object are added together its**called the ______ _______. Net Force**The energy an object has due to its motion is called**________ ______. =Kinetic Energy**Fluid friction experienced by objects flying threw air..**• Ex. a leaf or a piece of paper • Air restance**This law states that the momentum of any group of objects**remains the same, or is conserved, unless outside forces act on the objects. (friction is an example of an outside force) • The law of conservation of momentum**A mouse is traveling at a velocity of 10 m/s west and its**mass is 25 kg what is its momentum? • 250 kg x m/s**Total Distance /Total Time =**=Average Speed**The amount of matter in an object…**• This measurement stays the same no matter where an object is… • (on earth or the moon for example) • mass**An object that is thrown is called a…**• projectile**When the only force acting on a falling object is gravity,**the object is said to be… • Free falling**For every action force there is an equal and opposite ______**______. • Reaction force**When measuring force, the units used are kg x m/s sq. or**______. • Newtons • (N)**What formula is used to calculate**force… Force = ________ Mass X Acceleration**Friction that occurs when one solid surface slides over**another… • Sliding friction**Mass, Acceleration and Force are all related. If one of**those components changes, it will affect the others. • Ex. … • Newtons 2nd Law**Free falling objects accelerate at what rate due to the pull**of gravity? • 9.8 m/s squared**What was the velocity of the plane that traveled 1000 miles**in 5 hours east? • 200 mph east**An object weighs 50 pounds and is accelerating at 10 m/s.**What is the force on the object? • 500 N**Stored energy that results from the position or shape of an**object is called _________ ______. =Potential Energy**The maximum velocity a falling object can achieve…**• Terminal Velocity**Air resistance is an example of...**• Fluid Friction