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This is an science 8th grade Exam practice test

Questions and Answers

1.

A Unit of pressure is called a
- A.
  
  Pascal
- B.
  
  Bernoulli
- C.
  
  Pound
- D.
  
  Meter
Correct Answer
A. Pascal
2.

Magnetic poles that are alike
- A.
  
  Attract
- B.
  
  Repel
- C.
  
  Make out (this is for my mom)
- D.
  
  Have the same shape
Correct Answer
B. Repel
3.

The function of a generator is to change
- A.
  
  Chemical energy to electrical energy
- B.
  
  Electrical energy to chemical energy
- C.
  
  Electrical energy to mechanical energy
- D.
  
  Mechanical energy to electrical energy
Correct Answer
D. Mechanical energy to electrical energy
4.

The Gauges on the dash board of the car are
- A.
  
  Step-up transformers
- B.
  
  Step-down transformers
- C.
  
  Generators
- D.
  
  Galvanometers
Correct Answer
D. Galvanometers
5.

A dry cell battery produces
- A.
  
  An alternating current
- B.
  
  A direct current
- C.
  
  The same current that a generator produces
- D.
  
  Both direct and alternating
Correct Answer
B. A direct current
6.

As in the case of unlike magnetic poles, unlike electric charges
- A.
  
  Attract each other
- B.
  
  Repel each other
- C.
  
  Going doggy style on each other
- D.
  
  Ur mom does that
Correct Answer
A. Attract each other
7.

A chemical symbol represents the________of an element.
- A.
  
  Name
- B.
  
  Reaction
- C.
  
  Group
- D.
  
  Structure
Correct Answer
A. Name
8.

A family of elements that has two electron in its outer energy level is the___________.
- A.
  
  Actinides
- B.
  
  Alkaline earth metals
- C.
  
  Alkali metals
- D.
  
  Halogens
Correct Answer
B. Alkaline earth metals
9.

Bromine is the only halogen and nonmetal that is normally a
- A.
  
  Gas
- B.
  
  Liquid
- C.
  
  Semiconductor
- D.
  
  Solid
Correct Answer
D. Solid
10.

The noble gases are in
- A.
  
  Group 18
- B.
  
  Group 1
- C.
  
  Group 13
- D.
  
  Group 2
Correct Answer
A. Group 18
11.

A solution that contains all of the solute it can hold at a given temperature is
- A.
  
  Diluted
- B.
  
  Saturated
- C.
  
  Colloid
- D.
  
  Unsaturated
Correct Answer
B. Saturated
12.

A chemical reaction in which two or more substances combine to form another substance is called a________.
- A.
  
  Synthesis reaction
- B.
  
  Decomposition reaction
- C.
  
  Product
- D.
  
  Reactant
Correct Answer
A. Synthesis reaction
13.

A switch can be used to open and close an electric

Correct Answer
circuit
14.

As an airplane wing moves, air moves faster above the wing than below it
- A.
  
  True
- B.
  
  False
Correct Answer
A. True
15.

A magnetic_________________is a grouping of billions of atoms that all have magnetic fields lined up in the same direction.

Correct Answer
domain
16.

Molten rock that formed the ocean floor contains___________, which is lined up in the direction of earth's magnetic field.

Correct Answer
Iron
lava rock
magnetic material
17.

What elements can be made into permanent magnets? (More that one answer can be selected)
- A.
  
  Iron
- B.
  
  Copper
- C.
  
  Nickel
- D.
  
  Alluminum
Correct Answer(s)
A. Iron
C. Nickel
18.

The _________________ is a stream of electrically charged particles flowing at high speeds from the sun.

Correct Answer(s)
Solar Wind
solarwind
19.

A car with a weight of 16,170N is placed on piston B of a hydraulic lift. Piston B has a surface area of 5,005 cm^2, and piston a has an area of 65cm^2. What force must be applied to piston A to lift the car.
- A.
  
  248.7 N
- B.
  
  325N
- C.
  
  210 N
Correct Answer
C. 210 N
20.

According to____________, if you decrease the volume of a container of gas and hold the temperature constant, the pressure of the gas will increase.
- A.
  
  Bernoulli's principle
- B.
  
  Boyle's Law
- C.
  
  Charles's law
- D.
  
  Archimedes' principle
Correct Answer
B. Boyle's Law
21.

According to___________, as the velocity of a fluid increases, the pressure exerted by the fluid decreases.
- A.
  
  Bernoulli's Principle
- B.
  
  Boyles' law
- C.
  
  Charle's law
- D.
  
  Archimedes
Correct Answer
A. Bernoulli's Principle
22.

According to_______________, the volume of a gas increases with increasing temperature, as long as pressure does not change
- A.
  
  Bernoulli's principle
- B.
  
  Boyles's law
- C.
  
  Charles's Law
- D.
  
  Archimedes' Principle
Correct Answer
C. Charles's Law

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Current Version
Jan 25, 2013

Quiz Edited by
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May 11, 2011

Quiz Created by
Qstaley

Science Exam Practice

A Unit of pressure is called a

Magnetic poles that are alike

The function of a generator is to change

The Gauges on the dash board of the car are

A dry cell battery produces

As in the case of unlike magnetic poles, unlike electric charges

A chemical symbol represents the________of an element.

A family of elements that has two electron in its outer energy level is the___________.

Bromine is the only halogen and nonmetal that is normally a

The noble gases are in

A solution that contains all of the solute it can hold at a given temperature is

A chemical reaction in which two or more substances combine to form another substance is called a________.

A switch can be used to open and close an electric

As an airplane wing moves, air moves faster above the wing than below it

A magnetic_________________is a grouping of billions of atoms that all have magnetic fields lined up in the same direction.

Molten rock that formed the ocean floor contains___________, which is lined up in the direction of earth's magnetic field.

What elements can be made into permanent magnets? (More that one answer can be selected)

The _________________ is a stream of electrically charged particles flowing at high speeds from the sun.

A car with a weight of 16,170N is placed on piston B of a hydraulic lift. Piston B has a surface area of 5,005 cm^2, and piston a has an area of 65cm^2. What force must be applied to piston A to lift the car.

According to____________, if you decrease the volume of a container of gas and hold the temperature constant, the pressure of the gas will increase.

According to___________, as the velocity of a fluid increases, the pressure exerted by the fluid decreases.

According to_______________, the volume of a gas increases with increasing temperature, as long as pressure does not change