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WorksheetsScience 7/8 Final Exam (AB 7 Curr)
Total questions: 103
Worksheet time: 52mins
An ecosystem thrives with biotic & abiotic parts. An example of an abiotic part of an ecosystem is ...
lichen
fungus
minerals
fern plants
Living things have basic needs. Throughout the first section in this unit the needs of living things were examined in depth. The four basic needs of living things are:
food, oxygen, clothing, love
oxygen, food, water, habitat
water, oxygen, habitat, protection
food, water, habitat, space
The relationship where both organisms help each other - such as the goby fish and the snapping shrimp is called ...
partnerism
parasitism
mutualism
commensalism
The beaver population in Yoho National Park has declined due to ...
more hunting permits
lower water flow
fewer forest fires
more Aspen trees
A clay liner and a system of pipes is used in a sanitary landfill to …
prevent leakage
recycle waste
restore oxygen
prevent disease
Which of the following word equations describes cellular respiration?
Light energy + carbon dioxide + water ->food + oxygen
Food + oxygen -> carbon dioxide + water + energy
Light energy + oxygen + carbon dioxide ->water + food
Food + carbon dioxide + energy -> water + oxygen
Decomposers – known as the clean-up crew - are the decomposers. Scavengers also get rid of the waste in an ecosystem. Scavengers differ from decomposers because they ...
do not kill organisms for food
do not eat dead organisms
break down larger organisms
only feed on living plants and animals
A plant uses most of the energy it gets from the Sun to support it’s life functions. The following percentage represents the amount of energy that a plant provides to a consumer, such as a herbivore.
5 %
10 %
15 %
20 %
Food chains and food webs are models in science, which visually show us the different relationships within an ecosystem. The primary difference between the food chain and the food web is :
a food chain shows how energy is stored
a food web shows how energy is used
a food web is a complex system of food chains
a food chain is a combination of different food webs
All living things need water to live. The water cycle has four main processes. The two processes that return water to the earth are ...
evaporation and condensation
condensation and precipitation
transpiration and condensation
evaporation and transpiration
When students studied their schoolyard to identify what human impact had on the numbers of organisms they recorded their data in a table. Two places where they likely studied were the …
climbing apparatus and parking lot
climbing apparatus and the tarmac
parking lot and the soccer field
tarmac and the nature garden
The introduction of a new species to an area will likely negatively impact the native species in that area. Scientists call this introduction of new species ...
bioinvasion
biodiversity
biohazardous
biomagnification
The overabundance of European starlings causes problems in farmer’s fields and hazards at airports. This introduced species competes with other birds, such as bluebirds, woodpeckers and flycatchers for …
insecticides
nesting sites
migration patterns
predation
The first living species to arrive in an area are usually alga and fungus. Together their mutual relationship is visible in their form they can be observed - lichen. Lichen grows on bare rock and is considered to be the ...
invasive species
primary species
pioneer species
climax species
Scientist and researchers study the life cycles of insects so they can better control them …
and teach them tricks
without using pesticides
and lengthen their overall life span
to use as food for other research animals
To reduce our ecological footprint, we can …
consume more water and less food
create more waste and recycle it
use materials that require less energy to produce
take longer more relaxing showers
The largest group of plants in the world is seed plants. The structure in seed plants that function to produce food for the plant is the ...
flower
stem
seed
leaf
Moving water up a plant from the roots to the leaves occurs by a combination of different processes. The main process that draws water up from the plant roots is …
osmosis
capillary action
diffusion
transpiration
Osmosis is the diffusion of water particles when there is a difference in concentration. When the concentration of water in the soil is greater than the concentration of water in the roots of the plant, the water particles will move to the …
stem tissue
leaf cells
root hairs
stem tubes
Usually found in the very center of the flower, the female part of the flower is called the ...
ovary
stoma
pollen
stigma
One of the nutrients that plants need to grow healthy and develop properly is nitrogen. If plants do not get enough nitrogen, their leaves will ...
turn yellow
wilt and die
curl and turn brown
lose too much water
Plants prevent the process that moves soil from place to place, because their roots hold the soil in place. This process is ...
erosion
respiration
weathering
protection
All organisms are connected within an ecosystem. Plants are the most important because they make their own food and they are the ...
carnivores
herbivores
consumers
producers
Soil is a natural resource. The components of soil include organic matter and minerals. When soil contains partly decayed organic matter it is called ...
clay
sand
humus
vegetative
Farmers need to make money when growing crops. Most farmers only grow one type of crop in a particular area. This type of farming is called …
shelterbelts
mini-cropping
monoculture
single-cropping
Many farming practices are used to save the soil from excess erosion. Planting trees or shrubs along the edges of field is one such practice. The purpose behind this is to ...
provide travel corridors for water
enhance crop rotation
plant the seeds through the stubble
reduce wind damage and trap snow
Spreading manure over cropland is a technique growers use to improve the yield of different crops. This action adds this nutrient to the soil …
salt
calcium
vegetation
organic matter
The process which combines genetic material from one organism into another organism, to make a new organism is called genetic …
diversity
addition
engineering
recreation
One of the effects of monoculture farming practices is that pests feeding on that crop have a large food supply. Monoculture is also a farming practice that actually lowers …
cost of pesticides
biodiversity
crop yield
natural predators
In early times, people observed that heat – because it seemed to flow from a hot place to a cold place – must be an invisible fluid that they called …
temperature
energy
thermal
caloric
The reappearance of central heating occurred in the late 1700s, as coal became the main fuel source. Central heating was originally developed around 100 B.C. by the …
Americans
Canadians
Romans
Greeks
The Particle Model of Matter helps to explain ideas about Thermal Energy. This model includes each of the following points EXCEPT .
all substances are made up of tiny particles that are too small to see
the particles are always in motion
. the particles increase their energy output when they collide
the particles have spaces between them
As more heat is transferred to a solid, the particles vibrate and some of the particles in the solid break loose. The solid begins to change state. This is an example of …
heating a solid
heating a liquid
melting a solid
freezing a solid
The thermal energy of a substance is the …
total kinetic energy of all the particles
average kinetic energy of the particles
kinetic energy of each particle separately
measure of how hot or cold the substance is
When air is heated inside a balloon, the air makes the balloon rise. This happens because – compared to the air outside the balloon, the heated air is …
less dense
more dense
warmer
cooler
When thermal energy is added to a solid the volume of the solid will change. Steel beams bending or even breaking in a bridge, because of an extreme change in temperature are a result of thermal…
conduction
contraction
expansion
design
In a liquid the particles are moving quickly. When heat is added they have more energy, but this energy is transferred from particle to particle in a different way than in a solid. The reason for this is because of the ...
speed of the particles
space between the particles
types of particles
temperature of the particles
Volcanoes, hot springs and geysers are examples of useful thermal energy sources. Thermal energy from inside the Earth's crust can be harnessed ...
as an environmental pollutant
as a clean alternative to using fossil fuels
and is called geovolcanic energy
and used to generate fossil fuel resources
Solar cells are arranged in panels, which are connected in a series, and then placed to capture and store the Sun’s energy in low voltage batteries. The panels are connected in a series to form what is called a solar ...
system
field
array
site
When a fireplace becomes too hot, this device - a moveable plate, that controls the flow of air to the fire - can be adjusted …
cooler
deflector
airfoil
damper
To determine where heat is lost in a building, contractors can ask a photographer to take this type of photo of the house.
A thermogram
A radiogram
. A thermal negative
An infogram
R-value (insulating rating) is given to each material that is used in the construction of a building. The best insulating product would have a …
low R-value
high R-value
minimal R-value
restricted R-value
The three main energy users are …
home, transportation, industry
recreation, transportation, streetlights
shopping, transportation, industry
home, transportation, recreation
A dangerous by-product, from the use of fossil fuels (coal, natural gas and oil) enters the atmosphere when industries burn this fuel. A by-product can react with water in the air to form acid rain. The by-product is ..
carbon dioxide
sulfur dioxide
carbon monoxide
nitrogen monoxide
All of the following structures can be classified as manufactured, EXCEPT a …
jigsaw puzzle
spoon
feather
fishing net
Inukshuk is a unique symbol of Inuit culture. To anyone who encounters these manufactured structures (which come in many different forms and shapes) the greeting they convey is one of joy and happiness. Their purpose is to …
show danger
guide travelers
reward hunters
identify hazards
Both of these structures are houses (igloo,tent) for people in very specific environments. One advantage of structures such as these is that they …
are portable
are fireproof
keep out animals
protect from the cold nights
The actual effect of a force depends on three things: the magnitude, or size of the force; the direction of the force; and …
how the force is applied
where the force is applied
why the force is applied
how long the force is applied
Identify which structure would have the greatest stability, because of its centre of gravity.
High centre of gravity and a narrow base
High centre of gravity and a wide base
Low centre of gravity and a narrow base
Low centre of gravity and a wide base
When you put your hands on your desk and put all your weight on them - then try to move them forward your hand (much like a structure) resists movement forward because of ...
static forces
kinetic forces
external forces
frictional forces
This palm tree is demonstrating this property …
brittleness
ductility
plasticity
flexibility
A change of shape in a structure or a structural component, because the material is unable to resist the load acting on it is called …
deformation
resistance
ductility
brittleness
During the Ice Storm in Quebec in 1998, ice crystals formed on many structures. Some of these structures failed because the formation of ice crystals on the structure added to the structure’s …
flexibility
overall mass
safety margin
tensile strength
A firm foundation is necessary to support a structure. Solid ground is not always firm and stable. There are environmental and man-made conditions, which make the soil, loosen and become compact, which makes the soil relatively unstable. Three strategies are use to ensure a structure is built on a firm foundation. The three strategies include all of the following, EXCEPT ...
find something solid
make a soil layer
spread the load
utilize pressure and density
Hollow triangle tubes are used as the traditional shapes for a bicycle. This is because they provide the best …
flexibility
ductility
strength
plasticity
The source of an earthquake can be determined by recording the interval time between the p waves and s waves. The first place that rocks break below the surface in an earthquake is called the ...
focus
fault line
epicenter
shadow zone
André tested the effects of water on the natural rock samples found in his schoolyard. He tested the rock samples with pure water (pH 6.8), rainwater (pH 4.5) and tap water (pH 6.7). The type of weathering he investigated was classified as ...
chemical
biological
mechanical
gravitational
Allison and Rachel were investigating the effects of landforms that have been created by the action of running water. They were told that the Alberta badlands are an example of this type of landform, called ...
sediment
fluvial
bedrock
striation
Specific patterns such as cubic, tetragonal, hexagonal, orthohombic, monoclinic and triclinic describe how minerals line up in a regular pattern creating smooth surfaces and sharp edges, making systems of ...
mineral hardness
crystal structure
cleavage types
synthetic models
The scale used to help identify different minerals, because each mineral will scratch all the minerals with a lower scale ranking than its own is named after a German scientist. The scale is called...
Newton’s Force Scale
Fahrenheit’s Scale
Mohs Hardness Scale
Richter’s Seismic Scale
Igneous rock can be classified by how it is formed. If it has formed beneath the surface, cooling slowly, it has larger grains and is called …
interior
intrusive
exterior
extrusive
Geologists identify mineral ores locations, which are hidden below the surface of the Earth, using different tools and technologies. Using sensitive instruments, such as a magnetometer, geologists are using this technique ...
remote sensing
geophysical prospecting
geochemical prospecting
exploration
The rocks and minerals that cover the first 50 meters or so of the Earth’s surface include sand, gravel, stones, and boulders. This material is called …
underburden
overburden
shield cover
common rock cover
Glaciers once existed in the southern hemisphere. The evidence Wegener found to prove this were the ...
morraines found
erratics found
bedrock abrasions
ice caves
Because rock is moving away from the mountain ranges found along the mid-Atlantic ridge, new rock is being formed. This sea-floor spreading indicates that rock nearest the continents is …
older
younger
softer
harder
Over 500 million years ago Alberta was tropical and the border with British Columbia was …
a mountain range
a shallow sea
an underwater trench
a fluvial landform
There is more than one way for living organisms to become fossilized. A cavity or track that was left behind by a living organism – providing evidence that it existed, is a type of fossil called a …
cavity fossil
evidence fossil
trace fossil
track fossil
Layers of sedimentary rock stay in their original position, with the newest layers on the top and the older layers on the bottom. These layers of rock are called ...
indexing
parent rock
rock strata
superimposed
The general time periods that organize the history of the Earth are called ...
eras
periods
years
centuries
Scientists have inferred that there might be some relationship between dinosaurs and birds from some of the Archaeopteryx fossils they discovered a few impressions of feathers
wings
feathers
webbed feet
hollow bones
There is an evident theory that all the continents were joined together at one point in time in a super-continent. The name of this super-continent is...
Pantera
Presbyterian
Superland
Pangaea
The person that invented the theory of the "Continental Drift" is...
Galileo Galilei
Marie Curie
Alfred Wegener
Stephen Hawking
The theory of Plate Tectonics states that the earth's crust is divided into 7 major sections and floats on the mantle.
True
False
Plates that are moving together are called CONVERGING plates and the result of this action is...
Volcanoes
Mountains
Rivers
Poor Weather
Plates that move in the opposite direction are called DIVERGING plates and the result of this action is...
Volcanoes
Mountains
Oceans
Poor weather conditions
Tectonic plates shift around Earth at an extremely fast rate.
True
False
A force that stretches or strains.
compression
friction
gravity
tension
Center of gravity is usually located where
more weight is concentrated
less weight is concentrated
less mass is concentrated
more mass is concentrated
What is torsion force?
a squeezing force
A twisting force
a sliding force
a pulling force
What is tension?
a sliding force
a twisting force
a squeezing force
a pulling force
What is shear force?
a twisting and pulling force
a twisting force
a squeezing force
a pulling force
What is a live load?
the deck
The weight of anything not permanently attached to the structure.
The weight of the structure.
Cables and Towers
In soil, minerals come from...
Rocks
living things
decaying things
Farmers have to take care of the soil so plants can grow well. Which of the following is the best answer?
fertilize
irrigate
clear land
rotate crops
All are ways to take care of the soil.
What would happen if farmers did not rotate their crops each year?
Nothing would happen- everything would be fine
More water would stay in the field
Soil would run out of nutrients
Plants would remain healthy
A close-term relationship between different species in a population is called
Symbiosis
Photosynthesis
Homogeneous
Symbolism
The relationship in which both organisms benefit.
Predation
Mutualism
Commensalism
Parasitism
The relationship in which one organism benefits and the other is unaffected.
Parasitism
Predation
Mutualism
Commensalism
This occurs when organisms in a community fight for the same limited resource.
Commensalism
Competition
Mutualism
Symbiosis
What limited resource are the plants in this picture most likely competing for?
Shelter
Mates
Wind
Sunlight
As energy in the form of heat is added to an ice cube, it begins to melt. What causes melting.
Heat causes the molecules to expanded and forces them apart.
Heat removes thermal energy from the ice cube and causes it to become liquid water.
Adding energy causes the bonds between the hydrogen and oxygen in the ice cube to break.
The transfer of thermal energy to the ice cube causes its molecules to move faster.
Which example illustrate the transfer of energy through RADIATION?
feeling warmth when you sit in a sunny place.
feeling warm air while standing in front of the blower from a heating system.
feeling the warmth of the bricks around a fireplace by touching them with your hand.
feeling warmth on the soles of your feet when you walk along the beach on a sunny day.
A fireplace warming the air in the room is and example of this type of heat transfer?
conduction
convection
radiation
transformation
At room temperature water is a liquid. How could the water be changed to a solid?
add heat
remove heat
decrease density
increase density
An ice cube is placed in a glass of water. Which of the following best explains the heat transfer?
The thermal energy is moving from the ice cube into the water causing the temperature of the water to increase.
The thermal energy is moving from the ice cube into the water causing the temperature of the water to decrease.
The thermal energy is moving from the water to the ice cube causing the temperature of the water to increase.
The thermal energy is moving from the water to the ice cube causing the temperature of the water to decrease.
Which farming practice can help increase biodiversity and reduce the risk of pest outbreaks?
Monoculture
Crop rotation
Clear-cutting
Overgrazing
What is the main function of roots in most plants?
Releasing oxygen
Producing seeds
Absorbing water and nutrients
Carrying out photosynthesis
Which of the following is an example of a natural structure?
Bridge
Bird's nest
Dam
Skyscraper
When a liquid is cooled, its particles move more slowly and come closer together. This process is known as …
melting
evaporation
condensation
freezing
A relationship where one organism benefits and the other is neither helped nor harmed, such as barnacles on a whale, is called …
parasitism
predation
commensalism
mutualism
Which of the following is an example of a structure designed to withstand strong winds?
a tall, narrow tower
a dome-shaped building
a flat-roofed house
a building with large windows
