# Shared Flashcard Set

## Details

Mid-Term
8'th Grade Science Terms and Ideas
21
Science
01/13/2008

Term
 The best type of graph to show how some fixed quantity is broken down into parts is_____? A) BarB)CircleC)LineD)Scatter
Definition
 B)Circle
Term
 One benefit of the SI system is that it is _____? A)Based on units of 100B)Not used to measure tempatureC)Based on units of 10 D)Not used in the U.S.
Definition
 C) Based on Units of 10
Term
 A rule or principle that describes what happened in nature is a _____?A) Hypothesis B) Scientfic LawC)ProblemD) Theory
Definition
 B) Scientifc Law
Term
 A standard for comparsion that helps to ensure that the experimental result is caused by the condition being tested is the _____? A) ConstantB)ControlC)Dependent VariableD)Hypothesis
Definition
 B) Control
Term
 A factor in an experiment that changes from the manipulation of the independent variable is the __? A) Constant B)Control C)Depenedent Variable D)Hypothesis
Definition
 C) Dependent Variable
Term
 The application of scientific knowladge to help people is _____? A) DiscoveryB)Hypothesis C)Pure ScienceD)Technology
Definition
 D) Technology
Term
 If you ride your bike dow a road for 5 miles then turn around and ride back, your distance is ___ your displacement? A)Greater than B)Equal toC)Less thanD) Can't Determine
Definition
 A) Greater than
Term
 Motion is a change in ____? A)Time B)SpeedC)Velocity D)Postion
Definition
 D) Postion
Term
 The relationship between speed, time and distance is ____? A) t= s/dB) d= t/s  C) s=d*t D) s= d/t
Definition
 D) s= d/t
Term
 The acceleration due to gravity is A) 98 m/s^2B)9.8 m/s^2C)9.8 m/s D).98 m/s
Definition
 9.8 m/s^2
Term
 For any object, the greater the force that's applied to it, the greater its _____ will be A) AccelerationB)GravityC)Inertia D) Velocity
Definition
 A) Acceleration
Term
 The Statment "to every action there is an equal and opposite reaction" is ___. A) the law of conservation B) Newton's 1st C)Newton's 2nd D)Newton's 3rd
Definition
 D) Newton's 3rd
Term
 When two balls collide, the momentum of the balls after the collision is explained by___?A) the law of conservation B) Newton's 1st C)Newton's 2nd D)Newton's 3rd
Definition
 A) the law of conservation of momentum
Term
 Increasing the speed of an object____ its potential energy.A) does not affectB) increasesC)decreasesD)changes
Definition
 A) Does not affect
Term
 The SI unit for energy is___A) JouleB) CalorieC) Meter per secondD) Kilogram
Definition
 A) Joule
Term
 A bus engine transfers chemical potential energy into ___ so the bus moves.A) thermal energyB) gravitational potential energyC)electrial energyD)kenetic energy
Definition
 D) Kenetic Energy
Term
 The rate at which an electrical device converts energy from one form to another is __A) Electrical EnergyB) Electrical PowerC)Electrical ResistanceD)Voltage Regulation
Definition
 B) Electrical Power
Term
 A static discharge differs from an electrical current in that a static discharge___A) involves the movment of ionsB) is a flow of electronsC) lasts for only a fraction of a secondD) results because a force is exerted on the electrons
Definition
 C) Last for only a fraction of a second
Term
 A simple transformer consists of two coils of wire called the ___.A) inputs and output loops B) step-up and step-down C) alternating and direct currentsD) primary and secondary coils
Definition
 D) Primary and Secondary coils
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