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WorksheetsGrade 7 Science Final Review!
Total questions: 60
Worksheet time: 33mins
What do plants release into the environment during the process of photosynthesis?
Water
Oxygen
Carbon Dioxide
Light
What part of the plant attracts insects and other animals to encourage pollination?
Roots and their nutrients
Stems and their diffusion
Leaves and their stomata
Flowers and their nectar
Which of the following is NOT a soil decomposer?
A wasp
A bacteria
A mushroom
A worm
Why is it so hard to completely pull a dandelion from the soil?
They have fibrous roots
They have taproots
They have no roots
They have a fragile stem
Which of the following is a method of farming without soil?
Hydroponics
Monoculture
Organic Farming
Shelterbelt
Part 8 is called:
Stamen
Sepal
Pistil
Petal
Part 5 is called:
Stamen
Sepal
Pistil
Petal
Shelterbelts are a strategy for preventing which common farming issue?
Erosion
Flooding
Salinization
Contamination
By which process does water evaporate from a plant?
Condensation
Precipitation
Transpiration
Osmosis
Which of the following is NOT a function of roots?
Anchors the plant
Prevents soil erosion
Releases water into the soil
Absorbs nutrients
The hibiscus flower, seen here, grow in Hawaii. What essential need would it be missing if it tried to grow in Canada?
Food
Water
Gas exchange
Suitable habitat
When the paper industry cuts down trees, it also replants trees to make sure they have trees in the future. Using trees as a renewable resource is an example:
Symbiosis
Introduced species
Biological control
Sustainability
What type of surveillance uses satellites to observe the surface of the Earth?
Environmental
Physical
Chemical
Biological
Which of the following is abiotic?
Which sentence best describes the image?
The lion and the gazelle have a commensalism relationship.
The lion is a predator and the gazelle is its prey.
The lion is lower on the food chain than the gazelle.
Gazelles have an adaptation to run fast so that they can hunt lions.
Vultures circle the sky while predators consume their prey. Afterwards, the vultures clean the bones of the prey's remains because their niche is as a:
Decomposer
Scavenger
Predator
Prey
Ladybugs are often introduced by farmers to combat the aphids that eat their crops. Introducing the ladybugs as a natural enemy to the aphids is an example of:
Pesticide
Biological control
Mutualism
Biological surveillance
What consequence of pollution is best shown in this image?
Dispersion
Photosynthesis
Diffusion
Bioaccumulation
During photosynthesis, plants absorb carbon dioxide through tiny mouths on their leaves called stomata. Later, they expel water and oxygen from these same mouths. Stomata in plants satisfies which basic need?
Food
Gas Exchange
Suitable Habitat
Water
An igneous rock is formed by
the solidification of magma or lava
the compaction of sediments
heat and pressure
the movement of glaciers
A sedimentary rock is formed by…
the solidification of magma or lava
by the compaction of sedmidents.
heat and pressure.
the movement of glaciers
A metamorphic rock is formed by …
the solidification of magma and lava
the compaction of sediments
heat and pressure
the movement of glaciers
Streak is a property for identifying minerals. What is streak?
The shine or reflectiveness of the mineral.
The way the mineral breaks
The colour of the powder left behind when you scrape the mineral
The colour of the mineral
What term describe a break in a mineral that is uneven or rough?
Sleavage
Fracture
Luster
Fault
When lava cools we call the rock :
Igneous Intrusive
Igneous Extrusive
Metamorphic Intrusive
Metamorphic Extrusive
Frost wedging is caused by _____________________.
acids that freeze in the cracks of rocks, causing the rock to dissolve
a reaction between the oxygen in the air and the hydrogen in the rocks that causes the rock to dissolve.
water that seeps into the cracks of rocks, expanding when it freezes and causing the rock to break apart
ice from frozen rivers and glaciers that crashes into rocks causing them to break apart.
When two plates crash against each other it is called ____________________ and usually causes a ___________________.
a convergent boundary, trench
a convergent boundary, ridge
a divergent boundary, trench
a divergent boundary, ridge
The point on the surface where an Earthquake's waves roll out from is called:
Focus
Seismic wave
Epicenter
SportsCenter
A volcano is a _______ for magma to travel to the surface of the Earth.
opening
cyclone
chamber
vent
This mineral is the softest mineral on the Mohs scale.
Talc
Gypsum
Topaz
Diamond
The visible layers in the sandstone of the hoodoos shows the passage of time like the rings in a tree. We call this phenomenon:
Running Bond
Stratification
Layering
Chapelling
The Canadian Rockies are mountains formed mostly from:
Metamorphic rock
Igneous rock
Sedimentary rock
Glacier rock
The name "Okotoks" comes from the word "ohkotok" which means "rock" in the Siksiká language. It refers to the "Big Rock" or erratic south of the town. The Okotoks erratic is geologically special because the type and age of the rock tells us it is actually from Jasper. How do geologists explain how the erratic (the Big Rock) gets to Okotoks?
The rock rolled off a mountain and because it was so big it kept rolling across the prairies until it eventually stopped.
The rock was carried by melting glaciers across the prairies until the ice was gone and the rock was deposited here.
Aliens picked up the rock and dropped it hundred of kilometers away to troll ignorant humans.
A massive tsunami from BC swept through the Rocky Mountains and pushed lots of rocks from the mountains and left them behind all over Alberta.
A water bottle is an example of what kind of structure?
Mass
Natural
Frame
Dome
A beaver dam is best described as a(n):
natural mass structure
artificial mass structure
natural frame structure
artificial frame structure
Concrete is an example of what kind of material?
Composite
Layered
Woven or knit
Composite and layered
Which is not a consideration of designers working on a structure?
Cost
Security
Aesthetic
Education
A structure must have a defined ____________ and_____________.
form, function
form, volume
area, function
form, colour
Another word for the forces that are exerted on structures is:
gravity
a load
a weight
a yoda
An engineer creates a diagram with forces exerted on a bridge. In her diagram it includes:
the force, in Newtons, and the mass
the force, in Newtons, and the direction
the force, in Kilograms, and the mass
the force, in Kilograms, and the direction
What type of force is being exerted by these students?
Torsion
Tension
Shear
Compression
Which of these is a live load?
A bird's nest in a tree.
The wind that blows on a building.
A person sitting in a desk.
All of these are live loads.
The bridge in this building demonstrates what important structure used to resist forces?
A cantilever
A keystone
A running bond
A hoo-doo
A friend steals your paper and tears it in half. What kind of force did he apply to your paper?
Compression
Flexion
Shear
Torsion
Absolute zero is:
-273 °K
0 °C
The coldest possible temperature
The temperature when water begins to freeze
What starts to freeze at which temperature?
0 Kelvin
0 Celsius
0 Fahrenheit
200 K
You and your friend hold hands. Your friend's hand is VERY hot while your hand is very cold. After a few minutes, your hands change. How does that happen?
The cold in your hand was transferred to the hand of your friend by conduction.
The heat in your hand was transferred to the hand of your friend by conduction.
The cold in your hand was transferred to the hand of your friend by convection.
The heat in your hand was transferred to the hand of your friend by convection.
Check out this diagram. Which statement is true regarding the kinetic energy of the molecules in the containers?
The molecules move more rapidly in Diagram A
The molecules more more slowly in Diagram A
The molecules move at the same speed in both diagrams
The molecules move more quickly in Diagram B
Temperature is...
an instrument for measuring pressure
the average speed of particles
an instrument for measure weather
the total speed of particles
When a substance cools down...
the particles get closer together
the particles move more
the energy levels in the particles increases
the particles get farther apart
Which of the following would NOT be an example of cooling by evaporation?
Placing a damp cloth on the forehead of someone with a fever.
The way we cool a refrigerator
The sweat that forms on the skin of someone exercising a lot
Someone with light coloured clothing in the sun
Which of the following types of energy transfer occurs because of the movement of fluids?
Conduction
Isolation
Radiation
Convection
To measure extreme temperatures it's best to use a:
Bimetallic strip
Mercury thermometer
Thermocouple
Infrared thermometer
Which of the following would make a good conductor?
A wooden spoon
An copper pot
A styrofoam cup
A plastic bowl
Joint expansions on a bridge, like the picture shows, are placed for...
accomodating the expansion and contraction of the concrete bridge in changing weather
helping the police slow people down on a bridge
making sure the whole bridge stays the same temperature
making the bridge longer
Jacob makes his own ice cream by cooling and churning cream. This change of state is called
melting
solidification
sublimation
evaporation
Which letter shows when a substance melts?
A
B
C
D
Why does a frozen lake have a higher thermal energy than a cup of coffee?
Because the average speed of the particles is higher in the lake
Because the average speed of the particles is higher in the coffee
Because the lake is big, the total energy in the lake is higher than the small amount of coffee
Because the lake is big, it will always have more energy than anything smaller than it, no matter what
Which of the following relationships demonstrates mutualism?
A bird making its nest in a tree.
A bee travelling from flower to flower collecting nectar and transfering pollen.
A mosquito taking blood from a your arm.
A remora hitching a riding on the bellow of a shark.
When an ocean plate folds under a continental plate, it creates pressure on magma chambers within the Earth's crust until the magma starts to seep out of a vent at the surface.
This area of meeting plates is called:
A continental collision
An oceanic trench
A converging press
A subduction zone
