Font size
WorksheetsGrade 8 Science SOL Practice 4
Total questions: 65
Worksheet time: 47mins
Juan wanted to know if different brands of tires would make his model car go faster. Juan correctly set up an experiment to test 4 different brands of tires on his model car. According to his data table, how many times did Juan test Brand C of tire?
1
2
3
4
What was the Independent Variable?
2. Put the carbon dioxide sensor in and close the container
3. Turn on the light and wait 20 minutes
4. Check the carbon dioxide levels
5. Repeat experiment with different amounts of time under the light
What is the DV?
What would be one way to improve this experiment?
Grow different types of plants for each temperature.
Grow the plants in different soil conditions in each group.
Check the plants 10 times a day for growth.
Add more test groups at a wider variety of temperatures.
A student wants to do an experiment about which substances will react with baking soda to form bubbles? What should this student research before conducting this experiment?
physical changes
acids and bases
solubility
thermal energy
What thermal-energy trapping process is being used to grow plants in this drawing?
water cycle
ultraviolet radiation
greenhouse effect
carbon cycle
Life on Earth depends on energy from the Sun. Which of these is a solar property that makes life on Earth possible?
Some of the Sun's radiant energy is changed to thermal energy when it reaches Earth.
The Sun emits only a small amount of radiant energy.
The Sun only emits energy in the form of nuclear energy.
Radiant energy from the Sun can not be changed into other forms of energy.
Which type of electromagnetic radiation drives the greenhouse effect?
ultraviolet radiation
visible light
gamma rays
infrared radiation
Which type of electromagnetic radiation is most responsible for sunburn?
gamma rays
ultraviolet radiation
visible light
infrared light
As the air on the left side of the mountain rises, its temperature -
becomes cooler
becomes warmer
has no change
Which choice below shows the process for cloud formation in the correct order?
evaporation, cloud forms, condensation, vapor cools, vapor rises
evaporation, vapor cools, vapor rises, cloud forms, condensation
condensation, vapor cools, cloud forms, vapor rises, evaporation
evaporation, vapor rises, vapor cools, condensation, cloud forms
The diagram shows the formation of a thunderstorm. In what kind of clouds do thunderstorms occur?
cumulus
cirrus
cumulonimbus
stratus
The three major atmospheric gases (nitrogen, oxygen, carbon dioxide) are found mostly in which layer of the atmosphere?
troposhpere
stratosphere
mesosphere
thermsphere
The ozone layer is found within which atmospheric layer?
troposhpere
stratosphere
mesosphere
thermsphere
As altitude increases, the air pressure -
increases
decreases
stays the same
changes throughout each layer of the atmosphere
A low reading on a barometer is associated with what type of weather?
stormy weather
fair weather
hot weather
dry weather
The device that measures air pressure is a -
anenometer
psychrometer
thermometer
barometer
From Earth to space, what is the correct order of the atmospheric layers?
troposphere, mesosphere, thermosphere, stratosphere
mesosphere, thermosphere, stratosphere, troposphere
thermosphere, stratosphere, mesosphere, troposphere
troposphere, stratosphere, mesosphere, thermosphere
In which layer of the atmosphere do satellites orbit the Earth?
exosphere
stratosphere
mesosphere
troposphere
Elevation is the measure of how high something is above a reference point. What is the most common reference point used to refer to the elevation of natural landforms?
sea level
lake level
land level
river level
This symbol stands for -
a warm front
a cold front
an ocolluded front
a stationary front
Which city has the lowest high temperature for the day?
Little Rock
Boston
Seattle
New York
Which type of front leads to the formation of thunderstorms?
warm
cold
stationary
occluded
How are the balloons sticking to the wall?
current electricity
static electricity
an electromagnet
a permanent magnet
Which type of circuit is the best for modern homes and buildings?
series circuit
parallel circuit
Which of the following is a semiconductor?
plastic
glass
nickel
silicon
Electric motors convert _______ energy to ______ energy.
electrical, mechanical
chemical, electrical
mechanical, electrical
mechanical, chemical
What kind of circuit is this?
Series
Parallel
What is the purpose of a diode?
It acts as a magnet when current is turned on.
It burns out and breaks a circuit when there is a short-circuit.
It is a semiconductor that only allows current to flow in one direction.
It turns mechanical energy into electrical energy.
Which of the following are insulators? SELECT ALL THAT APPLY.
an aluminum can
a nickel
a glass bottle
a plastic bottle cap
a copper wire
LEDs (light-emitting diodes) are a type of diode. These are made from a material that is called ______.
an insulator
a conductor
a semiconductor
an electromagnet
Which of the following are good conductors? SELECT ALL THAT APPLY.
copper
aluminum
dry air
rubber
salt water
On a magnet, where is the magnetic field strongest?
near the north pole
near the south pole
near both poles
in the middle
Which of the following statements are true about Earth's magnetic field? CHOOSE ALL THAT APPLY
When charged solar particles hit it and get drawn into the poles, it creates the aurora.
It is strongest near the equator.
It protects life on earth from solar radiation and other cosmic radiation.
It helps migrating animals navigate.
It causes a compass to point north and helps humans navigate.
Which of the following is the same as a Newton?
kg*m/s2
kg*m/s
m/s2
m/s
Which of Newton's laws is illustrated when a magician pulls a tablecloth out from under the dishes without disturbing them?
1st Law of Motion
2nd Law of Motion
3rd Law of Motion
A person is pushed forward into their seatbelt when a car stops
1st Law of Motion
2nd Law of Motion
3rd Law of Motion
A car accelerates faster than a truck.
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
The air is let out of a balloon and it flies around the room.
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
A swimmer pushes back on the water and moves forward.
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
A car taking off from a stop light. Acceleration?
yes-change in speed
yes-change in direction
no-constant velocity
In order for work to be done, these two things must happen. CHOOSE BOTH THAT APPLY.
A force must be applied.
The mechanical advantage must be more than 1.
There must be two units for time.
The object must move some distance.
The formula for power is _____.
work / time
force x distance
distance / time
mass x acceleration
The number of times a machine multiplies your effort force (the input force) is _____.
mechanical efficiency
work
mechanical advantage
power
A wheelbarrow uses a lever. Where is the input force?
the force of the load on the wheelbarrow (the bricks)
the force the person is applying to the handles
the force of gravity on the wheelbarrow
the force of friction between the wheel and the ground
Sally pushes a cart with 40 N of force over a distance of 2 m. How much work did she do? (Work = force x distance)
80 Watts
80 Joules
20 Watts
20 Joules
The baseball continues to travel upward until gravity forces it back to earth. Which of Newton's laws of motion does this illustrate?
1st
2nd
3rd
