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WorksheetsREVIEW
Total questions: 73
Worksheet time: 6hrs 5mins
Name
Class
Date
1.
In order to turn on the light, a piece of wire needs to be connected from -
a)
A to C
b)
A to D
c)
B to C
d)
C to D
2.
In order to turn on the light, a piece of wire needs to be connected from -
a)
A to C
b)
A to D
c)
B to C
d)
C to D
3.
A plant's green color is due to the presence of which organelle?
a)
Chloroplast
b)
Nucleus
c)
Mitochondrion
d)
Vacuole
4.
The diagram shows a graduated cylinder containing water. From which position will the most accurate measure of the volume of the water be made?
a)
Position 1
b)
Position 2
c)
Position 3
d)
Position 4
5.
Which of these has the greatest influence over how big a baby elephant will grow?
a)
the amount of oxygen in the air
b)
the amount of food available
c)
the size of the trees in the jungle
d)
the type of grass on the plains
6.
At what speed would a car have to move in order to travel 20 kilometers in two hours?
a)
5 km/hr
b)
10 km/hr
c)
20 km/hr
d)
40 km/hr
7.
The quality of air is monitored by the government to determine whether a city needs to take steps to control air pollution. To best measure air quality, the air should be tested -
a)
once a year on a day with very little vehicle traffic
b)
once a day during rush hour when the most cars are on the road
c)
several times a day in all kinds of weather
d)
at night when the air is probably less polluted
8.
Which body in the solar system usually contains an atmosphere?
a)
an asteroid
b)
a planet
c)
a meteor
d)
a comet
9.
Which of the following is used to measure the mass of an object?
a)
balance
b)
metric ruler
c)
graduated cylinder
d)
barometer
10.
Which of these resources would give the most current, complete and accurate information on planets?
a)
planet website by Round Rock Middle School
b)
The NASA website
c)
a set of general encyclopedias
d)
a science book about the planets
11.
Which of these planets in the solar system was the most recently discovered?
a)
Mars
b)
Venus
c)
Jupiter
d)
Pluto
12.
Electric bills are calculated based on the amount of energy consumed. The consumption is measured in units of -
a)
newton meters
b)
millijoule seconds
c)
megavolts minutes
d)
kilowatt hours
13.
Which system shows a transformation from chemical to electrical and light energy?
a)
a car battery causes the headlights to shine
b)
a candle burns and lights up the room
c)
a display of fireworks in the night sky
d)
an avalanche rolls down a steep mountain
14.
A group of people were concerned about a new coal-burning power plant that might be built in their neighborhood. What is probably their main concern?
a)
Burning coal produces more heat than burning wood
b)
the heat from burning coal can drive generators that produce electricity
c)
burning coal produces sulfur dioxide which contributes to acid rain
d)
there is more coal in the earth than there is oil and gas
15.
Which biome contains large populations of grazing herbivores, few species of birds, and deep, rich soil?
a)
taiga
b)
tundra
c)
deciduous forest
d)
grassland
16.
Cells --> Tissues --> Organs --> ?
What is next in this series?
What is next in this series?
a)
habitats
b)
organisms
c)
systems
d)
organelles
17.
Which of these belongs in the outermost shell (energy level) of an atom?
a)
Electrons
b)
Protons
c)
Neutrons
d)
Photons
18.
The force that holds the planets in orbit around the sun is called -
a)
motion
b)
friction
c)
pressure
d)
gravity
19.
How are humans classified within a food chain?
a)
Producers
b)
Consumers
c)
Decomposers
d)
Manufacturers
20.
Convection is the result of -
a)
currents caused by the motion of heated molecules
b)
increases in the density of solids
c)
colder portions of liquids rising
d)
the lack of heat transfer
21.
If you break a piece of glass, the shape of the glass changes, but the properties in the fragments remain the same. Which of the following has occured?
a)
a chemical change
b)
a temperature change
c)
a phase change
d)
a physical change
22.
A substance made up of two or more elements that have been chemically combined is called -
a)
an atom
b)
a compound
c)
an element
d)
a mixture
23.
Which of the following is produced as a result of photosynthesis?
a)
Heat
b)
Water
c)
Oxygen
d)
Carbon Dioxide
24.
A proton has which of the following charges?
a)
Negative
b)
Neutral
c)
Positive
d)
Magnetic
25.
Lions usually live in prides made up of a few adult females, an adult male, and some younger lions. The females hunt together and the kill is shared with the pride. The lions' method of hunting best illustrates -
a)
cooperation
b)
competition
c)
territoriality
d)
parasitism
26.
Which of the following are characteristics of the most productive ecological environment?
a)
Stable temperatures and high rainfall amounts
b)
Hot temperatures and low rainfall amounts
c)
Cold temperatures and low rainfall amounts
d)
Low temperatures and high rainfall amounts
27.
The density of an object is dependent upon the object's mass and -
a)
height
b)
area
c)
volume
d)
weight
28.
Which of these has the most influence on ocean tides?
a)
the magnetic field of the Earth
b)
Gravity between the Earth and the moon
c)
Radiation from the sun
d)
Electrical forces in the atmosphere
29.
John and Emily were experimenting with the effects of road salt on plant growth. To do this, they watered plants daily with the same amount of salt water. They could best improve their experiment by -
a)
increasing the amount of salt added to the water each day
b)
cooling the salt water before watering the plants
c)
adding food color to see how far the salt penetrates the plants
d)
watering half the plants with pure water and half with salt water
30.
In which of the following environments would you expect to find the greatest number of different species of plants and animals per square mile?
a)
an island near the South Pole
b)
A wheat field in North Dakota
c)
A pasture on a Virginia farm
d)
A tropical rain forest in Panama
31.
Which of these is best classified as a mixture?
a)
Carbon Dioxide
b)
Water
c)
Soil
d)
Iron
32.
In the food web shown, which of the following consumers eats only producers?
a)
Hawk
b)
Owl
c)
Fox
d)
Mouse
33.
The area that shows the amplitude of the wave is -
a)
1
b)
2
c)
3
d)
4
34.
This experiment was set up to test the hypothesis that plants grow faster in green light. The same amount of water and fertilizer were added to each pot. Which of these would improve the experiment?
a)
Use green lights for all three plants
b)
Add more types of plants
c)
Use the same kind of plant in all trials
d)
Use different pots for each plant
35.
The line graph shows the heights of plants grown in fertilized and unfertilized soil. Based on this information, what will most likely occur on day six?
a)
neither plant should increase by 1 cm in height
b)
plant A should increase about 1 cm in height
c)
plant B should increase about 1 cm in height
d)
plant A should increase about 2 cm in height
36.
The location on the track where the train has the greatest potential energy is -
a)
1
b)
2
c)
3
d)
4
37.
Some snapdragon seeds were studied in this experiment. The seeds were placed in a dish lined with a moist paper towel. Which of thee is the independent (manipulate) variable in this experiment?
a)
the type of seed
b)
the amount of water used
c)
the number of sprouts
d)
the temperature of each dish
38.
Which of the following lists the elements in order, from those having the least protons to those having the most protons in the atoms?
a)
O, N, B, Li
b)
Na, S, Al, Cl
c)
O, S, Se, Te
d)
Rb, K, Na, Li
39.
This chart represents the type and number of items collected in a beach cleanup. Based on the chart, what percentage of the total items collected from the beaches was plastic?
a)
46%
b)
49%
c)
56%
d)
70%
40.
The picture shows a pond ecosystem. What would most likely happen if all the lily plants were removed from this community?
a)
there would be more oxygen in the air
b)
the pond water currents would be slower
c)
there would be more kinds of animals in the pond
d)
the animals would have fewer places to hide
41.
The sea urchin shown has radial symmetry. This means that its body parts are -
a)
equally arranged around a central point
b)
designed to function in seawater
c)
likely to be reformed if any part of the body is damaged
d)
able to function on land and in the water
42.
Both light bulbs are lit in the circuit above. In order to turn off both lights, a switch must be installed in the circuit at the place marked -
a)
1
b)
2
c)
3
d)
4
43.
In this food web, which organism has the greatest number of food sources?
a)
snake
b)
hawk
c)
shrew
d)
mouse
44.
All of these can be inherited by people EXCEPT -
a)
height
b)
eye color
c)
blood type
d)
language
45.
Which of the following is an example of static electricity?
a)
a dry-cell battery connected to wires lights up a light bulb
b)
a balloon sticks to a wall after it is rubbed with a piece of wool
c)
a magnet sticks to a refrigerator door made of metal
d)
a light switch that is turned on runs a ceiling fan
46.
During which phase does the Moon receive sunlight only on the side facing away from Earth?
a)
Full Moon
b)
New Moon
c)
Waning gibbous
d)
Waxing gibbous
47.
A coal burning facility is constructed in an area containing several pond ecosystems. How will this human activity most likely affect the pond ecosystems?
a)
more nutrients will be available
b)
organism diversity will increase
c)
disease will become less common
d)
water quality will be reduced
48.
Which characteristic is used to classify frogs into a different phylum from squid, snails, and jellyfish?
a)
frogs are predators
b)
frogs breathe oxygen
c)
frogs have backbones
d)
frogs live on land
49.
Which is an SI metric unit of measurement that is used to record the heat transfer of a solution in a classroom investigation?
a)
liter
b)
newton
c)
volt
d)
degree celcius
50.
Black bears roam over large territories. What effect would building shopping centers in these territories have on the bears?
a)
promote an increase in black bear reproduction
b)
stabilize the black bear population
c)
reduce the black bears' habitat
d)
introduce a new bear population to the area
51.
According to this equation, what happened to the carbon and oxygen?
a)
they combined chemically to form a new compound
b)
they combined chemically to form carbon and oxygen
c)
they combined physically to form a new mixture
d)
they combined physically to form a new element
52.
The average distance from Earth to the Moon is 384,401 km. How is the distance from Earth to the Moon expressed in scientific notation?
a)
3.84 x 103 km
b)
384 x 103 km
c)
3.84 x 105 km
d)
3.84 x 106 km
53.
Which energy transformation occurs first in a coal-burning power plant?
a)
chemical energy to thermal energy
b)
thermal energy to mechanical energy
c)
thermal energy to electrical energy
d)
mechanical energy to electrical energy
54.
This picture shows a radiometer. It is designed to be placed in a sunny window. One side of each thin blade of the radiometer is painted black, and the other side is painted white. The sun's rays strike the blades, and the device begins to spin. The device is powered by which kind of energy?
a)
wind
b)
solar
c)
electrical
d)
geothermal
55.
Which of the following is an example of potential energy?
a)
a glass jar sitting on a shelf
b)
a flag waving in the wind
c)
a ball rolling along a sidewalk
d)
a battery powering a radio
56.
A car manufacturer reduces the mass of a car by 250 kg. If the new design is otherwise identical to the old design, how will the new car compare to the old car?
a)
it will have a greater gravitational attraction to the road
b)
it will require more fuel to operate
c)
it will need less force to move
d)
it will release more gas emissions
57.
A student predicts that similar ice cubes will melt faster in a microwave than in a pot on the stove. How should this hypothesis be tested?
a)
measure and compare the volume of the pot and the microwave
b)
determine the volume of liquid water made by each ice cube
c)
observe and record the time for each ice cube to completely change to a liquid
d)
identify and record the temperature of each ice cube before each trial
58.
Which of these best describes the particle motion taking place as CO2 gas is exposed to freezing temperatures?
a)
the particles decrease speed
b)
the particles move with more force
c)
the motion of the particles becomes random
d)
the motion of the particles is unchanged
59.
The best scientific reason for a scientist to accept a specific theory is -
a)
to obtain funding for the research
b)
that research and observation support the theory
c)
because there can only be one correct theory
d)
to gain recognition as a great scientist
60.
Robert Hooke looked at a piece of cork under a microscope. The little boxes he saw in the cork are called -
a)
chromosomes
b)
genes
c)
cells
d)
nuclei
61.
There are harvesting regulations for many fish species that limit the number and size of the fish that may be kept. What is the most likely reason these limits have been placed on harvesting these fish?
a)
to have enough fish for zoo aquariums
b)
to keep other game fish species populations low
c)
to have people spend more money on fishing
d)
to keep a healthy population of adult fish
62.
How is the modern model of an atom different from the Bohr atomic model?
a)
The masses of the atomic particles are different
b)
The numbers of electrons are different
c)
The shapes of the nuclei are different
d)
the arrangements of the electrons are different
63.
As the energy needs for Virginia increase, new sources of energy are required to replace or supplement the nonrenewable sources of energy now in use. Two sources of energy that are renewable and available in Virginia are -
a)
natural gas and wind power
b)
coal and hydropower
c)
petroleum and solar power
d)
wind power and solar power
64.
Human sweat is the direct result of which life functions?
a)
respiration and cellular growth
b)
digestion and disease prevention
c)
reproduction and cellular transport
d)
waste removal and temperature control
65.
Which of the following are products of combustion?
a)
additional atoms
b)
newly discovered elements
c)
heat and light
d)
liquid and solid water
66.
Which of these substances is an element?
a)
steel
b)
chlorine
c)
plastic
d)
sugar
67.
The quality of pond water can be determined by identifying the number and types of organisms found living in the water. Which piece of equipment will best help students identify some of these organisms?
a)
microscope
b)
pH paper
c)
binoculars
d)
pan balance
68.
A scale model of the planet Mercury is shown. Based on the scale, which of the following is the most accurate diameter of Mercury?
a)
1,000 km
b)
5,000 km
c)
50,000 km
d)
500,000 km
69.
Where is water most likely to become contaminated?
a)
in a forest
b)
by a dam
c)
near a cattle farm
d)
at the ocean bottom
70.
A student makes a drawing of a carbon atom. Which of these should the student show in the nucleus of the atom?
a)
ions
b)
protons
c)
electrons
d)
molecules
71.
For separate ecosystems to be classified as the same type of biome, they must -
a)
have deciduous forests
b)
be located along the equator
c)
have similar organisms and climates
d)
be at least one hundred square meters in area
72.
Clouds are formed when millions of drops of water become suspended in the air. Which of the following is a step in the process of cloud formation?
a)
expansion of cold air
b)
formation of carbon dioxide
c)
condensation of water vapor
d)
breakdown of atmospheric ozone
73.
During a fireworks show, a family sees the spray of sparkles from an exploding firework high in the sky and, a moment later, hears the pop. Which of these best explains why the pop and spray do not seem to occur at the same time?
a)
light and sound travel through air
b)
sound travels through vacuum
c)
sound travels slower than light
d)
light and sound travel at the same speed
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