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Science 24 Final Review
Science 24 Final Review
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A #science24 final exam review
Flashcards
75 cards
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Questions
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Answers
1
How many W/h are represented by a 100W hair dryer running for a half hour?
200
100
50
25
2
What are the reactants in cellular respiration?
Carbon dioxide, water, and energy
Glucose and oxygen
Water and energy
Oxygen and carbon dioxide
3
Which of the following is true about adults and children?
an adult's head is smaller in proportion to their body size
babies have an strong bone structure especially their neck
a child's head is smaller in proportion to their body size
because of their size, airbags are dangerous for children
4
Efficiency is expressed as
a percentage
Newton Watts
kW*h
joules
5
Chemicals used to
kill insects
eating leaves on a fruit tree are examples of a(n)
fertilizer
organelle
polymer
pesticide
6
Which is NOT true for combustion reaction?
produces carbon dioxide and water
an example is a burning candle
usually required lots of energy
oxygen is always involved
7
What is energy?
the ability to stabilize
the ability to rest
the ability to move
the ability to work
8
This type of energy of moving water spins the blades of a turbine
chemical
potential
kinetic
thermal
9
Which science is the study of inherited traits?
Mendeletics
Genetics
Chromosomes
Heredity
10
If the product of a reaction becomes warmer, which is true?
the reaction is endothermic and energy is a reactant
the reaction is exothermic and energy is a product
it is exothermic and energy is a reactant
it is exothermic and energy is a product
11
Which of the following factors affects an individual's metabolism?
age
all of these
time of day
exercise
12
The word formula that describes any neutralization reaction is:
acid + element --> compound + water
base + salt --> acid + water
acid + base --> salt + water
acid + water --> salt + base
13
Which of the following is NOT an example of a pathogen?
bacteria
fungi
algae
virus
14
What kind of energy does a skier have standing still at the top of a hill?
potential
thermal
kinetic
solar
15
Which road condition would make it a good idea to increase following distance?
fog
icy road
all of these
wet road
16
What term describes our bodies maintaining a constant temperature?
vaccinated
communicable
homeostasis
metabolism
17
How are word equations organized?
Products --> Reactants
a. Reactants --> Products
Reactants = Products
Reactants = Products
18
Which symbol is used to indicate that a substance is dissolved in water?
(aq)
(l)
(s)
(g)
19
Which of these features best restrains your upper body during a collision?
2-point seat belt
3-point seat belt
air bag
steering wheel
20
Which of the following is a fossil fuel
solar
hyrdo
nuclear
coal
21
What kind of energy is used to fry eggs?
kinetic
thermal
potential
solar
22
Baked goods, such as bread, rise because chemical reactions release this gas.
sulfur dioxide
carbon dioxide
oxygen
ozone
23
Acetic acid is CH
3
COOH
(aq)
. How many of each type of atom are there in this molecule?
2 carbon, 2 hydrogen, 2 oxygen = 6 atoms total
4 carbon, 2 hydrogen, 2 oxygen = 8 atoms in total
2 carbon, 4 hydrogen, 2 oxygen = 8 atoms in total
1 carbon, 4 hydrogen, 1 cobalt and 1 oxygen= 7 atoms total
24
Which of the following best describes what the structure of DNA looks like?
twisted ladder
solar system
ferris wheel
staircase
25
Magnesium reacts with chlorine gas to make magnesium chloried. What is this an example of?
neutralization reaction
decomposition reaction
combustion reaction
composition reaction
26
As a pendulum swings, when is the potential energy greatest?
halfway between the bottom and rise of the swing
halfway between the rise and bottom of the swing
at the bottom of the swing
at the top of the swing
27
What energy does a ski racer have as she crosses the finishing line?
kinetic
potential
geothermal
muscular
28
Which of the following is the most dangerous form of transportation?
sea
air
road
rail
29
What time of day would you expect to have the highest internal body temperature?
at rest
exercising
eating
sleeping
30
The products of a chemical reaction...
can sometimes include energy
are what is made in a chemical reaction
are separated by a plus sign
all of these answers
31
After a vaccine, which does
your body produce to fight a specific disease
?
Antitoxins
Pathogens
Antigens
Antibodies
32
Drivers who have any alcohol on their breath
can be charged with
BAC
Dangerous driving
Driving Dangerously
Impaired driving
33
Each human cell has ______ chromosomes.
23
46
22
39
34
What is the unit for momentum?
m/s
kg
km/h
kg*m/s
35
Which of the following sets of chromosomes is male?
Y
XX
XY
X
36
Why does the
burning of coal contribute to pollution
?
it contains large amounts of hydrogen chloride
it contains large amounts of calcium
it contains large amounts of sulfur
it contains large amounts of methane gas
37
Evidence of a chemical change includes ALL of the following:
change of state, energy released, bubbles, precipitate
no change, odour change, bubbles, precipitate
change of state, energy release, colour change, no change
energy released, colour change, odour change, bubbles
38
Alcohol is a __________ and caffeine is a ______________.
stimulant - depressant
depressant - depressant
stimulant - stimulant
depressant - stimulant
39
Which organism(s) perform photosynthesis?
none of these answers
only plants
both green plants and animals
only animals
40
A disease that can spread from an insect to a human is called
virus
communicable
spreadable
non-communicable
41
Which of the following problems is reduced by removing sulfur from natural gas?
ozone layer depletion
acid deposition
sulfur scrubbing
greenhouse effect
42
Which is
not a type of food preservation?
Freezing
Sitting
Salting
Canning
43
Which substance in stomach acid neutralization is a salt?
hydrochloric acid
water
magnesium hydroxide
magnesium chloride
44
The Law of Conservation of Energy says that…
Energy can be created and destroyed
What goes up must come down
Energy can be changed from one form to another
We should conserve energy
45
Which of the following is true about restraining features?
reduce the force of a collision by slowing the impulse
include rigid and crumple zones
operate all the time to keep you safe while driving
hold occupants of a vehicle in place
46
A car moving right crashes into a truck going left (same speed), the truck mass is 2x the car.
The force will be equal to the sum of their momentum.
They will continue to move right
They will come to a complete stop.
They will continue to move left
47
What is naturally acquired active immunity?
body makes its own antibodies
antibodies are introduced to the body (vaccination)
ability to resist disease
antibodies are passed from mother to child
48
Which of the following uses solar energy in a direct way?
photosynthesis
thermal idonatries
cellular respiration
geothermal units
49
Which of the following fibers is synthetic?
wool
nylon
silk
cotton
50
Taking an antacid is an example of what type of reaction?
neutralization
energy
decomposition
combustion
51
What do bacteria need to grow?
food
warmth
moisture
all of these
52
Which of the following is NOT considered an input for the chemical reaction of photosynthesis?
glucose
sunlight
carbon dioxide
water
53
Which of the following is evidence that a chemical reaction has occurred?
None of these answers.
No new substance is formed
There is a change of state
A new substance is produced
54
Tears, hair, eyelashes are all examples of
immune response
inflammatory response
active defense
physical defence
55
When impulse occurs, what is true about mass and velocity?
mass changes but the velocity stays the same
both mass and velocity change
mass and velocity both stay the same
mass is the same but velocity changes
56
Which group of nutrients is mainly responsible for growth and repair of the body’s tissues?
carbohydrates
steroids
proteins
fats
57
what is the common name for sodium chloride?
table salt
epsom salt
salt substitute
chalk
58
In Canada the legal BAC level is
0.8
0.0008
0.08
0.008
59
What is the best place and position for an infant in a vehicle?
back seat facing backward
back seat facing forward
front seat facing backward
front seat facing forward
60
What type of person were airbags were originally designed to protect?
a child
a small elderly man
an adult male
a pregnant woman
61
Which product that should have the following Hazardous Household Product Symbol on the label.
ammonia
vinegar
baking soda
salt
62
What are the reactants in cellular respiration?
glucose and oxygen
water and energy
oxygen and carbon dioxide
carbon dioxide, water, and energy
63
Swelling an increased redness
around an injury or infection
is known as ___
Tonsillitis
An inflammatory response
Macrophages
A physical defence
64
Cellular respiration is an example of what type of reaction?
decomposition
combustion
neutralization
energy
65
How fast would you have to travel to cover 350 km in 3.5 hours?
110 km/hr
80 km/h
90 km/hr
100 km/h
66
The gold used in jewellery and stainless steel and both examples of:
polymers
synthetic fibres
natural fibres
alloys
67
Four examples of mutagens are:
genes, light, acid rain, drugs
mutations, fungi, viruses, bacteria
chromosomes, radiation, chemicals, bacteria
radiation, chemicals, ultraviolet light, and drugs
68
Which of the following is NOT a method of preserving metal?
painting
galvanizing
liming
sacrificial metal
69
What is one reason we should develop more hybrid vehicles?
They are small and adorable
They are larger than other cars
The batteries are heavier than engines
They are fuel efficient
70
How likely is a child to have long arms if mom's genes were "SS" and dad's genes were "ss"
25%
75%
100%
50%
71
Which of the following names a system where energy is changed from one form to another?
converter
input
output
convection
72
What is the most common way to convert fossil fuels into energy?
oxidation
neutralization
combustion
reaction
73
This phenomenon includes ocean levels getting higher
non renewable resources
conservation of energy
acid deposition
global climate change
74
What do green plants use solar energy for?
production of heat
production of nitrogen monoxide
production of carbon dioxide
production of food
75
The main resource used for power plants in Alberta is...
coal
oil
water
natural gas
