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

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Cards

Term

The best type of graph to show how some fixed quantity is broken down into parts is_____?

A) Bar

B)Circle

C)Line

D)Scatter

Definition
B)Circle
Term

One benefit of the SI system is that it is _____?

A)Based on units of 100

B)Not used to measure tempature

C)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 Law

C)Problem

D) 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) Constant

B)Control

C)Dependent Variable

D)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) Discovery

B)Hypothesis

C)Pure Science

D)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 to

C)Less than

D) Can't Determine

Definition
A) Greater than
Term

Motion is a change in ____?

A)Time

B)Speed

C)Velocity

D)Postion

Definition
D) Postion
Term

The relationship between speed, time and distance is ____?

A) t= s/d

B) 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^2

B)9.8 m/s^2

C)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) Acceleration

B)Gravity

C)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 affect

B) increases

C)decreases

D)changes

Definition
A) Does not affect
Term

The SI unit for energy is___

A) Joule

B) Calorie

C) Meter per second

D) Kilogram

Definition
A) Joule
Term

A bus engine transfers chemical potential energy into ___ so the bus moves.

A) thermal energy

B) gravitational potential energy

C)electrial energy

D)kenetic energy

Definition
D) Kenetic Energy
Term

The rate at which an electrical device converts energy from one form to another is __

A) Electrical Energy

B) Electrical Power

C)Electrical Resistance

D)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 ions

B) is a flow of electrons

C) lasts for only a fraction of a second

D) 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 currents

D) primary and secondary coils

Definition

D) Primary and Secondary coils

 

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