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science 10 provincial study guide. > science 10 provincial study guide > Flashcards

science 10 provincial study guide Flashcards

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Biology 101 flashcards
1
Q 
a physical or chemical factor in the environment that influences the growth of plants and animals is 
A. a biome
B. an ecosystem
C. a biotic factor
D. an abiotic factor
A

D. an abiotic factor

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2
Q 
which of the following biomes removes the greatest amount of atmospheric carbon dioxide?
A. desert
B. tundra
C. boreal forest
D. permanent ice
A

C. boreal forest

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3
Q 
which of the following changes is biotic?
A. the pH of a lake decreases
B. Available sunlight decreases
C. the population of birds increases
D. the temperature of a lake increases
A

C. the population of birds increases

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4
Q

which of the following changes has and immediate effect on the energy flow entering an ecosystem?
A. a decreases in the number of herbivores
B. an increase in the number of decomposers
C. an increase in the number of secondary consumers
D. a decrease in the amount of sunlight available to producers.

A

D. a decrease in the amount of sunlight available to producers

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5
Q

if two different species of squirrels compete for the same limited resources in a forest ecosystem, which of the following outcomes would be expected?
A. both species will proliferate
B. both species will become extinct
C. only one species will remain in the ecosystem
D. the two species will change the ecosystem so they can both occupy the same niche

A

C. only one species will remain in the ecosystem

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6
Q 
which of the following processes involves the greatest flow of phosphorus?
A. weathering
B. fish harvesting
C. leaching into soil
D. fertilizer application
A

C. leaching into soil

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7
Q

in the nitrogen cycle, what controls the entry of atmospheric nitrogen gas into living things?
A. dentrification
B. nitrogen fixation
C. absorption of nitrogen gas by oceans
D. abundance of nitrogen gas in the atmosphere

A

B. nitrogen fixation

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8
Q

methyl mercury can be extremely dangerous to living organisms because of bioaccumulation. Bioaccumulation is the process in which
A. living organisms decompose methyl mercury
B. organisms become resistant of methyl mercury
C. methyl mercury builds up in the bodies of organisms.
D. there is a chemical reaction between methyl mercury and another contaminant in the ecosystem

A

C. methyl mercury builds up in the bodies of organisms

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9
Q

in which of the following situations is a predator population most likely to go extinct?
A. a carnivore population in a region with few herbivores
B. a herbivore population in a region with many producers
C. a herbivore population in a region with large detrivore population
D. a detrivore population in a region with few carnivores but many herbivores

A

A. a carnivore population in a region with few herbivores

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10
Q 
which of the following outcomes result from deforestation of  a tropical rainforest?
1. soil erosion
2. extinction of various species
3. decreased levels of atmospheric carbon dioxide
A.1 and 2 
B. 1 and 3
C. 2 and 3
D. 1,2 and 3
A

A. 1 and 2
soil erosion
and
extinction of various species

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11
Q 
which biome is most affected by a pine beetle?
A. grassland
B. boreal forest
C. tropical rain forest
D, temperate deciduous forest
A

B. boreal forest

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12
Q 
often, our understanding of the environment benefits from knowledge acquired by previous generations who lived in close contact with nature. this type of information is called
A. natural selection
B. ecological hierarchy
C. a controlled experiment
D. traditional ecological knowledge
A

D. traditional ecological knowledge

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13
Q

which of the following characteristics apply to foreign species?
A. they reproduce slowly
B. they have natural predators in the ecosystem
C. they compete with native species for resources
D. they can only tolerate small changes in the environmental conditions

A

C. they compete with native species for resources

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14
Q 
which of the following subatomic particles are found in the nucleus of an atom?
1. proton
2. neutron
3. electron
A. 1 and 2
B. 1 and 3
C. 2 and 3 
D. 1,2 and 3
A

A. 1 and 2

protons and neutrons

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15
Q 
which of the following pairs of atoms are most likely to form a covalent compound?
A. neon and helium
B. phosphorous and bromine
C. manganese and selenium
D. magnesium and ruthenium
A

B. phosphorous and bromine

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16
Q 
an atom of which the following elements has the same number of valence electrons as an aluminium atom?
A. neon
B. silicon
C. gallium
D. magnesium
A

C. gallium

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17
Q 
a sample of an unknown substance was tested using several pH indicators. The results are shown below;
-methyl red is red
-indigo carmine is blue
-methyl orange is yellow 
A. pH 2.5
B. pH 4.5
C. pH 6.5
D. pH 8.5
A

B. pH 4.5

18
Q

The pH of pond water increases from 6.8 in the morning to 8.0 in the afternoon as photosynthesis increases throughout the day. This occurs because CO2, an non-metal oxide, is
A. removed by photosynthesis making the water basic
B. removed by photosynthesis making the water acidic
C. produced by photosynthesis making the water basic
D. produced by photosynthesis making the water acidic

A

A. removed by photosynthesis making the water basic

19
Q 
the name of a the compound Na2O is 
A. sodium oxide
B. sodium oxygen
C. sodium (I) oxide
D. sodium (II) oxide
A

A. sodium oxide

20
Q 
what is the formula of the compound formed when ammonium and sulfide ions combine?
A. NH4S
B. NH4S2
C. (NH4)S2
D. (NH4)2S
A

D. (NH4)2S

21
Q 
Nickel (II) hydroxide is used in rechargeable batteries. what is the chemical formula for this compound?
A. NiOH
B. Ni2OH
C. NiOH2
D. Ni(OH)2
A

D. Ni(OH)2

22
Q 
the name of a compound Pb(SO3)2 is
A. lead sulfite
B. lead (II) sulfite
C. lead (III) sulfite
D. lead (IV) sulfite
A

D. lead (IV) sulfite

23
Q 
what is the formula for diphosphorus tetrachloride?
A. PCl2
B. P2Cl
C. P2Cl4
D. P4Cl2
A

C. P2Cl4

24
Q 
what coefficient is needed in front of oxygen to balance the equation?
_H202  > _H20 + _02
A.1
B.2
C.3
D.4
A

A.1

25
Q 
which of the following sets of order coefficients correctly balances the equation for this reaction?
_(NH4)2CO3 + _HCl > _NH4Cl+ _H20+_CO2
A. 1,1,1,1,1
B. 1,1,2,1,1
C. 1,2,1,1,1
D. 1,2,2,1,1
A

D. 1,2,2,1,1

26
Q

in an experiment, the base calcium hydroxide was reacted with an unknown acid, producing calcium chlorate and water. what is the formula of the acid used in the experiment?
calcium hydroxide +unknown acid > calcium chlorate + water
A. HClO
B. HClO2
C. HCIO3
D. HCIO4

A

C. HClO3

27
Q

What is the role of catalyst in a chemical reaction?
A. it provides energy
B. it causes products to form more quickly
C. it decreases the concentration of reactants
D. it increases the surface area of the reactant molecules

A

B. it causes products to form more quickly

28
Q

what information can be used to identify an isotope?
A. element symbol and mass number
B. element symbol and atomic number
C. number of protons and atomic number
D. number of protons and number of electrons

A

A. element symbol and mass number

29
Q 
Polonium -218 has a half- life of 3 minutes. How much time has passed if there is only 10g left of and original 160g sample of Po-218?
A. 4 min
B. 9 min
C. 12 min
D. 15 min
A

C. 12 min

30
Q 
which of the following isotopes could undergo nuclear fusion to produce helium - 3?
A. helium -4 
B. carbon -14
C. hydrogen -2
D. uranium -235
A

C. hydrogen -2

31
Q 
which of the following quantities is a displacement?
A. 42 m
B. 42 m/s
C. 42 m to the east
D. 42 m/s to west
A

C. 42 m to the east

32
Q 
a hockey puck slides across the ice,  moving at 2.2 m/s. How far will it travel in 1.5s?
A. 0.68m
B. 0.70m
C. 1.47m
D. 3.3m
A

D. 3.3m

33
Q 
a honey bee flies 15m (north) in 3 s. what is its average velocity?
A. 0.2 m/s (north)
B. 5 m/s (north)
C. 15 m/s (north)
D. 45 m/s (north)
A

B. 5 m/s (north)

34
Q 
a spider can crawl at 0.52m/s. how long would it take the spider to crawl 4m across a kitchen floor?
A. 0.13s
B. 0.52s
C. 2.08s
D.7.69s
A

D. 7.69s

35
Q 
a bus travelled +140km in 2 hours but only travelled +50km in the next hour, due to poor weather conditions. what was the average velocity of the bus during the 3- hour trip?
A. +30km/h
B. +63km/h
C. +95km/h
D.+120km/h
A

B. 63km/h

36
Q 
Starting from rest, superman accelerates to 5.0m/s in 0.71. How fast will he be moving after a total time of two minutes if he continues to accelerate at the same rate?
A. 7.04 m/s
B. 14.1m/s
C. 600m/s
D. 845m/s
A

D. 845m/s

37
Q 
the crust is part of the
A. core
B. mantle
C. lithosphere
D. asthenosphere
A

C. lithosphere

38
Q

which of the following can locations can deep focus earthquakes occur?
A. ocean-ocean transform faults
B. ocean-ocean divergent plate boundaries
C. ocean-continent convergent plate boundaries
D. continent - continent convergent plate boundaries

A

C. ocean- continent convergent plate boundaries

39
Q 
which of the following types of plate interactions is most associated with the mountain formation of mountain ranges without volcanic activity?
A. oceanic-oceanic divergent
B. oceanic- continental  convergent
C. continental - continental transform
D. continental - continental convergent
A

D. continental-continental convergent

40
Q 
which of the following factors are responsible for the continued motion of the Explorer Plate off the coast of BC? 
1. slab pull
2. ridge push
3.mantle conservation
A. 1 and 2
B. 1 and 3
C. 2 and 3
D. 1,2 and 3
A

D. 1,2 and 3
slab pull
ridge push
mantle conservation

41
Q

which of the following discoveries was used to support Continental Drift Theory?
A. fossils of identical species were found on the same continent
B. fossils of identical species were found on separate continents
C. fossils of different species were found on the same continent
D. fossils of different species were found on separate continents

A

B. fossils of identical species were found on separate continents

42
Q 
a trench occurs at 
A. rift valley
B. divergent plate boundary
C. transform plate boundary
D. convergent plate boundary
A

D. convergent boundary

science 10 provincial study guide. (3 decks)

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