WorksheetsReview 8th Grade-Part 1
Total questions: 15
Worksheet time: 30mins
Name
Class
Date
1.
The distance from Jupiter to the moon is 268,800 km. How is this written in scientific notation?
a)
2.688 x 10^2
b)
2.688 x 10^4
c)
2.688 x 10^5
d)
2.68 x 10^4
2.
Which of the following is an example of technology using compression waves?
a)
Mapping the ocean floor using sonar
b)
Waves found in a microwave used to heat food
c)
Beam of light from a flashlight
3.
Heat is exchanged between the water in the pipes and the Earth. What type of system is this an example?
a)
Heat Engine
b)
Hydrological Engine
c)
Geothermal
d)
Heat Pump
4.
Which of the following will most likely form a covalent bond?
a)
A metal reacts with a nonmetal & their gain electrons.
b)
A nonmetal reacts with a nonmetal & share.
c)
A nonmetal reacts with a metal & their share electrons.
d)
A metal reacts with a nonmetal & their lose electrons.
5.
A substance undergoing a physical change is observed by a student. The substance is ______.
a)
Vaporizing/Evaporation
b)
Oxidizing/Rusting
c)
Combusting/Ignite
d)
Decomposing/Decaying
6.
A boy found that a radio controlled car traveled 1,200m in 45 minutes. How many kilometers did the radio controlled car travel in 45 minutes?
a)
0.12 km
b)
1.2 km
c)
12 km
d)
120 km
7.
What does the particle theory of matter state?
a)
matter consists of molecules and atoms; these molecules and atoms are constantly in motion;
b)
Particles of the same element are identical
c)
Particle of matter attract each other.
d)
Particles of matter reside close & dense
8.
A man is lifting a box which requires 225 N of force. He decides to use a ramp to load the box in a truck. What amount of force will most likely will be needed?
a)
225N
b)
75N
c)
245N
d)
450N
9.
Which statement is correct concerning the subatomic particles found in an atom?
a)
Electrons are composed of a small particles called quarks.
b)
Both quarks & electrons orbit the nucleus of an atom
c)
The mass of an electron is smaller than the mass of a proton.
d)
An electron & proton have3 the same type of charge.
10.
What temperature will the motion of molecules stop?
a)
100 degrees C
b)
32 degrees F
c)
-273 degrees C
d)
273K
11.
A student created an electric current using a battery and a coil of insulted wire. What items does he need to complete the electric current?
a)
ceramic tile
b)
glass test tube
c)
steel nail
d)
plastic tube
12.
The figure shows an object that connects a high voltage power line and does NOT transfer an electric current. This is classified as a(n) _____________
a)
semiconductor
b)
transistor
c)
diode
d)
insulator
13.
A television remote transmits what type of wave?
a)
Infrared
b)
Radio
c)
Gamma
d)
Ultraviolet
14.
Students must always do which of the following while using a chemical in the lab.
a)
Hold the chemical at eye level & confirm the amount in the container.
b)
Check the label to make sure the chemical is the correct one for the experiment.
c)
Place the chemical in a test tube so it can be viewed properly.
d)
Write down the color of the chemical for reference after the experiment.
15.
A student on a ladder held a balloon for 2 minutes before climbing down the ladder with the balloon. What concept was being demonstrated about the balloon while being held on the ladder for 2 minutes?
a)
The chemical change of the balloon
b)
Physical change of the balloon
c)
kinetic energy of the balloon
d)
potential energy of the balloon
100 %
