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WorksheetsScience Review Z
Total questions: 122
Worksheet time: 2hrs 2mins
When a plant wilts, the stomata close. How does this help the plant?
it increases photosynthesis
it reduces further water loss
it increases cellular respiration
it reduces water intake by roots
In which direction do the roots of a plant grow?
in the direction of moisture only
in the direction of the pull of gravity only
in the direction of water and the pull of gravity
in the direction of water and away from the pull of gravity
Which stimulus causes a responding plant to demonstrate phototropism?
intensity of light
direction of light
length of day
time of day
Plant growth is affected by environmental factors such as gravity. If a seed is allowed to sprout and grow while it is turned sideways, which will most likely occur?
roots will grow downward, stems will grow downward
roots will grow downward, stems will grow upward
roots will grow upward, stems will grow downward
roots will grow upward, stems will grow upward
How do the sprouts of seeds buried in complete dark in the soil find their way to the surface of the soil?
they grow toward light
they grow toward surface warmth
the grow away from bedrock
they grow opposite the direction of the pull of gravity
Certain flowers will open for twelve hours and then close. Which stimulus do the flowers respond to when they open and then when they close for that period?
light levels
moon phases
seasonal temperatures
carbon dioxide levels
The nitrogen cycle is important to plants because
nitrogen in the water is healthy.
plants cannot use nitrogen as it is.
plants need ammonia to photosynthesize.
most nitrogen comes from rocks in the soil.
Rain forests contain more species of trees than any other biome. However, scientist have found that the soil of the forest floor is relatively nutrient poor. What could most likely account for this?
The lack of weathering reduces the availability of the minerals.
The nutrients are being utilized by the plant life.
The forest floor does not get enough sunlight.
The animals eat the nutrients.
The table shows information about a biome. Which biome is best described in the table?
Avg.Temp.: Summer 40 Winter -37
Yearly Precipitation: 6 to 10 inches
Vegetation: Low, No deep roots
Growing Season: Short
Animals: Very few
desert
rainforest
tundra
savanna
An ecosystem is described above. Which row contains abiotic factors?
Snails, mussels, insects
Bacteria, fungi, algae
Herbaceous plants, marsh grasses
Low elevation, high salinity (salt)
An abiotic factor that most influences the organisms living in a salt marsh is
fish
water
predators
grasses
A species of mouse spends the day sleeping in its burrow to avoid high daytime temperatures. It is processing what little water it needs from the seeds it collects. To which environment is this mouse best adapted?
rainforest
marine
desert
tundra
Which environmental factor would most likely prevent an orange tree from surviving in the desert?
the lack of moisture
the high level of heat
the extra amount of wind
the low levels of sunlight
Based on this picture, which is a biotic factor?
the water
the clouds
the tree
the sun
Which of these is an abiotic element in an ecosytem?
the average yearly rainfall in the ecosystem
the types of producers found in the ecosystem
the size of a predator population in the ecosystem
the microorganisms living in the soil of the ecosystem
A student observes that a ray of light bends where it passes from from glass into water. What best explains this phenomenon?
The properties of a wave change as it travels from medium to another.
The energy of a liquid is greater than that of a solid and increases the amount of amount of light in it.
The mass of a ray of light varies in proportion with the density of its surroundings.
A wave consumes energy in a solid but produces energy in a liquid.
What is the source of organic material needed for most fertile soils?
moving water
eroded sand
decaying plants
weathered bedrock
The composition of soil influences the soil's ability to retain and transmit water and air. What soil type would be best for planting a productive garden?
Sandy soils because they provide high silica content.
Loamy soils because they contain sand and clay.
Slightly rocky soils because they provide needed materials.
Clay soils because they are heavy soils and repair water.
When microorganisms deplete the oxygen in soil through respiration, the soil becomes
humus
anaerobic
compost
aerobic
The iron in iron-rich red soils may not be in a form that can be taken up by tree roots. As a result, leaves and needles may look yellow. Some trees release acids that convert iron in soil to a usable form. The change in soil chemistry is a type of which process?
deposition
weathering
precipitation
photosynthesis
Humus is an organic material that makes up soil. Which characteristic best indicates that soil has a high humus content?
the color of the sample
the mass of the sample
the amount of the clay in the sample
the amount of rock in the sample
The finest grained soils are richest in
sand
humus
clay
iron
How cam the type of bedrock under soil affect the characteristics of the soil?
by preventing soil erosion
by absorbing excessive rainwater
by contributing small rock particles to the soil
by providing surface area for nutrient accumulation
Which is an example of a mixture?
oxygen
ice
soil
silver
Which is considered a property of soil?
streak
fracture
texture
luster
What should be added to soil to increase its water retention?
pebbles
sand
rocks
clay
A gardener wants to increase the ability of garden soil to retain water. Which of these should the gardener add to the soil?
course sand
loose gravel
nitrogen pellets
organic material
A student identifies a soil sample as "very gritty." What characteristic of the soil did the student describe?
texture
hardness
organic
water retention
Which soil component has the least capacity for holding water?
silt
clay
sand
humus
Soil conservation officers inspect fields on four farms. Each farmer uses a different method to protect his fields.Which farm has methods which would BEST prevent soil erosion?
where crops are planted in plowed straight rows
where each field is left unplanted every other year
where different crops are planted in plowed rows each year
where crops are planted within the remains of last year's crops
Soil will pack down over time which decreases the ability of soil to hold water. Which animals would best help the soil hold water?
earthworms making tunnels under the surface
cattle making depressions with their hooves
horses making trenches when they gallop
sheep pulling up plants by their roots
Which two plates collided with each other to form the Himalaya Mountains?
Animals depend on plants for many things, including food. What do plants depend on from animals?
energy for photosynthesis
pest control
carbon dioxide
oxygen
Based on this diagram of a food web, what would most likely happen if a disease caused the snake population to become extinct?
The owl population would decrease.
The rabbit population would increase.
The grass population would increase.
The mouse population would decrease.
Which best shows the energy transfer between animals in a shoreline ecosystem?
Fish -->Plants -->Birds
Plants -->Birds -->Fish
Plants -->Fish -->Birds
Fish -->Birds -->Plants
Which statement best describes the function of bacteria?
Bacteria produce light energy used by producers in an ecosystem.
Bacteria decrease the amount of energy needed for the ecosystem.
Bacteria break down organic debris to recycle nutrients in the ecosystem.
Bacteria convert carbon dioxide into oxygen for photosynthetic organisms in the ecosystem.
Carnivores and omnivores are classified as consumers. Which two organisms are also classified as consumers?
bacteria and fungi
fungi and scavengers
parasites and herbivores
decomposers and herbivores
What part of this plant takes in carbon dioxide?
1
2
3
4
The table lists some vegetables that are sorted by color.
Which other way of organizing these vegetables will have them divided the same way as they are now?
fruit or seeds
roots or leaves
flowers or food
cooked or raw
How are the stem of a tree and the stem of a flower most similar?
Both are soft.
Both have thorns.
Both support the plant.
Both have woody bark.
Which part of a plant is used to absorb sunlight during photosynthesis?
leaf
root
seed
flower
Which part of a plant takes in minerals and water?
flower
leaf
root
stem
Which process is best shown by this diagram?
photosynthesis
reproduction
respiration
transport
Oxygen is released in photosynthesis. Which cycle includes photosynthesis?
the carbon cycle
the nitrogen cycle
the water cycle
the rock cycle
In which part of a tree does photosynthesis most likely take place?
bark
roots
trunk
leaves
Chlorophyll captures energy from sunlight during photosynthesis. Energy is captured from all of the colors of visible light except one. Which color of light is not captured?
blue
violet
green
red
Carbon dioxide is removed from Earth’s atmosphere by
animal respiration
decaying organism
plant photsynthesis
burning fossil fuels
What are the three common states of matter?
liquid, gas, vapor
gas, liquid, fluid
solid, gas, liquid
solid, vapor, liquid
If you boil 200 mL of water and when you take the water off the burner there is only 180 mL left in the pot, what happened to the missing water?
It was used up.
It condensed.
It was absorbed by the heat.
It turned into water vapor.
This is a model of a molecule. What does each sphere in the model represent?
an atom
a compound
a nucleus
an ion
When water changes from a liquid to a gas and then the steam condenses back to liquid, these changes are
physical
chemical
electrical
mechanical
Which beaker contains the greatest volume of liquid?
Beaker 1
Beaker 2
Beaker 3
Beaker 4
Paula determines a property of a marble using a balance and a graduated cylinder. What property is Paula most likely determining by using both tools?
density
length
mass
volume
A student has a beaker with 50 mL of water in it. A rock is placed in the beaker causing the water level to rise. The student measures the new water level and subtracts 50 mL. Which property of the rock is being measured?
mass
length
weight
volume
The metal lid on a glass jar is hard to open, so it is held under warm, running water. What causes the jar to open easily after it was held under water?
The water increased the pressure under the lid.
The jar shrunk with the warm water.
The water acted as a lubricant between the glass and the metal.
The metal lid expanded under warm water.
The separate atoms that make up a wooden table cannot be seen because the atoms are
too small.
moving too fast.
packed lightly together.
hidden beneath the surface.
An atom can best be described as
the smallest particle that has all the characteristics of a compound.
the smallest particle that has all the characteristics of an element.
a charged particle that is similar to a molecule.
a charged particle that is larger than a molecule.
Jennifer fills a graduated cylinder with an amount of liquid. Which property of the liquid is Jennifer most likely measuring?
density
mass
temperature
volume
Aluminum is an element. Which of the following best describes the smallest particle of aluminum that retains all the properties of aluminum?
a molecule
an atom
a proton
an electron
The masses and volumes of four cubes are shown. Which cube has the highest density?
1
2
3
4
This table lists some properties of zinc. Which property of zinc indicates that a cubic centimeter of it will sink in water?
appearance
density
magnesium
reactivity with hydrochloric acid
A student was given the volume and description of a substance and was asked to determine its density. What information is missing?
size
mass
boiling point
melting point
A new moon occurs about every
day
year
week
month
In what order are the Sun, Moon, and Earth during a total lunar eclipse?
Earth-Moon-Sun
Earth-Sun-Moon
Moon-Sun-Earth
Moon-Earth-Sun
It takes approximately 365 days for
the sun to orbit around the earth.
the moon to orbit around the earth.
the earth to orbit around the sun.
the earth to orbit around the moon.
What evidence is there that the gravitational pull of the moon has a direct effect on the earth?
climate variations
change of seasons
number of earthquakes
changes in tidal ranges
The moon is in orbit around the earth. What keeps the moon from changing its orbit?
friction
gravity
weight
rotation
Which of these includes Earth?
the asteroid belt
the Andromeda Galaxy
the solar system
the Eagle Nebula
Tides on the earth are influenced more by the moon than the sun because the moon is
brighter than the sun.
larger than the earth.
colder than the earth.
closer than the sun.
For a science activity, Mia had to draw a picture of the moon each night. If Mia drew a new moon, what type of moon did she draw about one week later?
gibbous
full moon
new moon
first quarter
Which of these best describes when a lunar eclipse will occur?
when the earth is between the moon and the sun
when the moon passes between the earth and the sun
when the sun is between the earth and the moon
when the earth is at a 90 degree angle to the moon and the sun
What kind of eclipse is occurring where the arrows are pointing?
partial solar eclipse
total solar eclipse
partial lunar eclipse
total lunar eclipse
What event happens in a daily cycle?
cliffs erode
rivers flood
volcanoes erupt
high and low tides
Which reason is most responsible for the changing seasons on the earth?
the way the earth tilts on its axis
the way the earth rotates on its axis
changes in the distance between the earth and the sun
changes in the amount of energy the sun produces
When can lunar and solar eclipses take place?
during a full moon only
during a full moon or a new moon only
during a waning gibbous moon only
during a waxing gibbous moon only
One difference between the moon and the earth is that the moon
has a thick atmosphere.
revolves around a planet.
has liquid water on the surface.
is composed entirely of sedimentary rock.
Based on the diagram which position of the moon most likely result in people being able to view a total solar eclipse?
1
2
3
4
