3rd Six Weeks Exam Review
Questions for your 3rd six weeks exam will be taken from these
question. Due to the large number of questions, not all of these will be
on the exam. Make sure you understand the question and why the
answer reviewed is correct.
Man in Space Assessment
Questions 9-27
9
What work of Sir Isaac Newton
helped others to understand and
overcome the obstacles of
modern space travel.
A
The laws of Planetary motion.
B
The discovery of gravity.
C
D
The invention of
electromagnetism.
The construction of simple
rockets.
3rd Six Weeks Exam Review
10
The floating sensation
astronauts experience while in a
space environment is due to –
F
zero gravity.
G
microgravity.
H
gravity.
J
loss of gravity.
11
Which statement best describes the effect of microgravity on an astronaut’s
bone health?
A
The amount of physical stress on bones increases, resulting in bone
deterioration.
B
The amount of physical stress on bones decreases, resulting in an
increase in bone density.
C
The amount of physical stress on bones increases, resulting in an
increase in bone density.
D
The amount of physical stress on bones decreases, resulting in bone
loss.
3rd Six Weeks Exam Review
12
Which of the following is NOT a
limitation of the model?
F
size of the Sun
G
size of the planets
H
distances between planets
J
number of planets
3rd Six Weeks Exam Review
13 How can a model of the solar
system be used in planning a
trip from Earth to another
planet?
A
To estimate distance, travel
time and fuel cost.
B
To anticipate the
frequency and occurrence of
meteorites and other objects
in space.
C
To map flight plans that
avoid solar flare-ups and
solar winds.
D
To predict possible
emergencies astronauts
may encounter during
space travels.
14
15
How does the space suit
backpack help astronauts
breathe in a space environment?
F
It maintains air pressure to
keep bodily fluids from
boiling.
G
It provides pure O2 for
inhaling and canisters to
collect CO2.
H
It stabilizes an internal
temperature of 22◦C (72◦ F).
J
It collects urine and solid
wastes.
The insulated feature of
spacesuit layers are designed to
A
protect from radiation.
B
trap excessive CO2.
C
regulate temperature.
D
provide pure O2.
3rd Six Weeks Exam Review
16
Why do astronauts wear space
suits in swimming pools before
participating in manned space
explorations?
F
It allows them to work in a
frictionless environment.
G
Gravity of water is similar
to microgravity of space.
H The load of the backpack is
lightened by water, allowing
astronauts to more
easily practice space tasks.
J
17
Wearing a spacesuit in
water simulates the
weightlessness of space.
How does pressure in the
astronaut’s space suit help the
body work?
A
The suit forces blood to
certain parts of the body to
counteract the absence of
gravity.
B
The suit acts as an external
pacemaker to regulate the
heartbeat.
C
The suit regulates gas
exchange between the
oxygen pack and the
astronaut.
D
The suit monitors the
amount of O2 to CO2 in the
blood.
18
All of the following are ways that atmosphere makes the existence of life on
Earth possible EXCEPT -
19
F
It shields the Earth from collisions.
G
It offers protection from radiation.
H
It maintains a constant temperature.
J
It allows for gas exchange between plants and animals.
When NASA sends probes to distant planets they will normally go to another
planet first, even though the probe will not collect any data from the first
planet. Why do they do this?
A
To take pictures of both planets
B
To make the trip longer
C
To shorten the trip using the first planet’s gravity to slingshot the
satellite.
D
NASA does not do this.
3rd Six Weeks Exam Review
20
What is the correct term for the
speed and direction a rocket
must travel to break away
completely from a planet’s
gravitational pull?
21 What will happen to a spacecraft
that is traveling faster than
orbital velocity?
A
It will not reach orbit.
F
escape velocity
B
It will fall back to Earth.
G
terminal velocity
C
H
orbital velocity
It will move away from
Earth.
D
It will orbit in an elliptical
pattern.
J
22
maximum velocity
Which of the following accommodations that allow space exploration are
required by the astronauts shown below as they work outside the International
Space Station?
F
water
G
gravity
H
oxygen
J
heat protection
3rd Six Weeks Exam Review
23
24
Spacecraft carrying humans
must land safely. Which of these
must a spacecraft carrying
humans do to land safely?
25 What will happen to the human
body without air pressure?
A
It will shrink.
A
It must slow down.
B
It will expand.
B
It must use a parachute.
C
It will remain the same.
C
It must land in the water.
D
D
It must land on a runway.
It will keep its shape but get
bigger.
How does an astronaut on a
space walk communicate with
astronauts in the spacecraft?
F
using sign language
G
by cellular phone
H
through radio waves from
Earth
J
through a radio transmitter
and receiver
3rd Six Weeks Exam Review
26
27
On a space mission, the gravitational environment can negatively affect the
bone density of astronauts. Which accommodation will most likely protect the
bone health of the crew on a space mission?
F
Drinking extra fluids.
G
Eating more calories.
H
Wearing protective clothing while inside the space vehicle.
J
Engaging in a daily routine using exercise equipment.
Which of the following spacecraft is designed to carry humans into space?
A
B
C
D
3rd Six Weeks Exam Review
Biomes, Biodiversity and Sustainability Assessment
Questions 21-41
21
Which ecosystem has a better
chance of surviving when
environmental conditions
change?
A
B
C
22
Why do plants that grow in the
tundra have shallow root
systems?
F
They have no soil in which
to grow.
G
They cannot grow through
the permafrost.
One with a great deal of
genetic diversity.
One with plants and animals
but no bacteria.
One with animals and
bacteria but no plants.
H They are frequently soaked
by heavy rains.
J
D One with little or no genetic
diversity.
3rd Six Weeks Exam Review
They are trampled each
time animals migrate.
23
24
Scientists classify climates and
biomes based on -
25
Where would you most likely find the
greatest variety and numbers of
animal life?
A
latitude and longitude
A
on a newly mowed lawn
B
latitude and elevation
B
C
temperature and rainfall
close to a pond with rocks, water
and several types of plants
D
temperature and altitude
C
in the center of a pond
D
next to a paved surface
Complete this statement. The
26
Deforestation, pollution, and
more diverse an ecosystem is -
over hunting can result in -
F
F
increase in biodiversity
G
decrease in biodiversity
H
no effect on biodiversity
J
a state of equilibrium
the more threatened its
populations are
G
the more similar the species
will be
H
the more stable it is
J
the fewer varieties of species
are present
3rd Six Weeks Exam Review
27
28
Which of the following would be true about an ecosystem with plenty of light
and water?
A
The ecosystem will contain a lot of the same type of producer.
B
The ecosystem will have a hard time sustaining any consumers.
C
The ecosystem will contain too many consumers.
D
The ecosystem will contain a lot of and a variety of producers.
A good adaptation for living in a
grassland would be F
the ability to hibernate
G
the ability of plants to grow
very high to reach the sunlight
H thick, insulating fur
J
the ability of plants to grow
after prairie fires
3rd Six Weeks Exam Review
29
Which of the following situations
contributes to stability in an
ecosystem?
A
increase in biodiversity
B
decrease in biodiversity
C
extinction of a population
from the ecosystem
D
removal of many populations
of organisms
30
Plants have a hard time living in a
desert. Which of the following is
the primary limiting factor?
F
elevation
G
space
H
food source
J
moisture
31
A canopy, an understory, and an
extremely high number of plant
and animal species are
characteristics of which biome?
A
temperate rain forest
B
deciduous forest
C
desert
D
tropical rain forest
3rd Six Weeks Exam Review
32 Some desert animals are most
active at dusk and dawn. This
adaptation is MOST helpful for -
33
F
preying on plant species
G
finding new water sources
H
avoiding high temperatures
J
hiding from hungry animals
The picture shows organisms from
one of the major biomes on Earth.
Which biome are all of these
organisms able to live in?
A
tropical rainforest
B
tundra
C
ocean
D
desert
34
Abiotic factors that could affect
the stability of an ecosystem
could include:
Which ecosystem has a better
chance of surviving when
environmental conditions change
over a long period of time?
F
hurricanes, packs of wolves,
and temperature
F
one with a great deal of
genetic diversity
G
blizzards, heat waves, and
swarms of grasshoppers
G
one with plants and animals
H
J
35
36
droughts, floods, and heat
waves
H
one with animals and
bacteria but no plants
fish, number of
decomposers, and algae
J
one with little or no genetic
diversity
How is a tundra biome similar to a
desert biome?
A
B
C
Both biomes have dry, rocky
soils.
Both biomes lack plants or
animals.
Both biomes are hot during the
day and cold at night.
D
but no bacteria
Both biomes are characterized
by very little precipitation.
3rd Six Weeks Exam Review
37 Which example represents an
abiotic factor in an aquatic
ecosystem.
A
Water lilies float on top of a
pond.
B
A population of bass is living in
a lake.
C
The pH of a lake is decreased
by acid rain.
D
Dragonflies feed on small
insects near a pond.
38
Base your answer to the following question on the graph below.
If the environment was to change dramatically, or a new plant disease were
to break out, which plant type would most likely survive?
39
F
wild wheat
G
domestic wheat
H
wild corn
J
domestic corn
What is one way that a temperate rain forest is different from a temperate
deciduous forest?
A
A temperate rain forest has large populations of grasses rather than
tall trees.
B
A temperate rain forest is made up of palm trees rather than
coniferous trees.
C
A temperate rain forest has a rainy season rather than year round
rainfall.
D
A temperate rain forest has trees that that lose their leaves in winter
rather than keeping them year-round.
3rd Six Weeks Exam Review
40
41
Which of the following is an
example of a marine ecosystem?
F
pond
G
river
H
wetland
J
open ocean
The diagram below shows interactions between different animals in an
ecosystem.
What type of ecosystem might be represented by the above diagram?
A
ocean
B
desert
C
wetland
D
arctic tundra
3rd Six Weeks Exam Review
Succession Activity
Questions 34-48
34
Which of these types of
environments experiences the
LEAST change in the total number
and type of species over time?
A
B
C
D
36
35
an ecosystem with only pioneer
species
an ecosystem that is in primary
succession
plants with roots that act as
wedges to slowly break apart
rocks
G
plants with long, thick roots that
H trees with exposed surface roots
that trap soil and vegetation
J
an ecosystem with a climax
community
A a microhabitat
F
tap into deep water supplies
an ecosystem that is in
secondary succession
A hurricane hits a coastal prairie and
destroys the habitat. Years later
there is an appearance of small
plants with rapidly spreading roots
on newly formed coastal sand
dunes. (hint: it is a newly formed
ecosystem). This vegetation
describes—
Which plant characteristics are
common to pioneer species?
37
plants with a broad mat of
surface roots that quickly soaks
up water
What is the relationship between
ecological succession and
equilibrium in an ecosystem?
F Ecological succession helps
maintain equilibrium in an
ecosystem.
G Ecological succession prevents
ecosystems from ever reaching
equilibrium.
B primary succession
C secondary succession
D biodiversity
H There is no relationship between
ecological succession and
equilibrium.
J Ecological succession and
equilibrium are the same thing.
3rd Six Weeks Exam Review
38
The diagrams above show an ecosystem during different stages of
ecological succession.
In which order will these stages occur, from earliest to latest?
A 4, 2, 1, 3
B 1, 2, 3, 4
C 3, 1, 4, 2
D 2, 4, 3, 1
39
Some ranchers use controlled fires to rid their grazing lands of unwanted plants.
These ranchers keep their land in early stages of succession and in a state of
equilibrium that is best for their livestock. Which of these kinds of plants would
MOST LIKELY be some of the first plants found growing in a pasture after fire?
F
trees
G
grasses
H
ferns
J
mosses
3rd Six Weeks Exam Review
40
The figure above shows the same ecosystem in Texas at two different times.
Which of the following MOST likely caused the change of species shown in the
figure?
41
A
development of a parking lot
B
passing through of a glacier
C
preservation of habitat
D
occurrence of a forest fire
Lava from an underwater volcano piles up over many years. Eventually, the pile
of lava sticks up above the ocean surface, forming a new island. To show that
succession is occurring on the island, it would be MOST helpful for a scientist to
measure changes in —
F
average temperature
G
day length
H
annual precipitation
J
soil depth
3rd Six Weeks Exam Review
42
A non-native plant is introduced into a diverse, mature ecosystem in equilibrium.
Assuming that the non-native plant has no natural enemies and that it thrives in
the ecosystem, how will it affect the community?
A
The native species will become more like the new plant.
B
The number of native species will decrease.
C
The number of native species will not be affected at all.
D The native species will become extinct
43
A non-native animal is introduced into a diverse, mature ecosystem in equilibrium.
Assuming that the non-native animal has no natural enemies and that it thrives in
the ecosystem, how will it affect the community?
F
Only the plants would be affected.
G
The entire ecosystem would be affected.
H Only the animals would be affected.
J
There would be no effect.
3rd Six Weeks Exam Review
44
Which of these types of
environments is MOST LIKELY to
experience the arrival of a pioneer
species?
45
Why does secondary succession
occur faster than primary
succession?
F
Fewer changes must occur in
secondary succession.
G
There are more pioneer species
in secondary succession.
H
The environmental conditions
A an old growth forest
B an undisturbed prairie
C an established mountain lake
are more extreme in primary
succession.
D a newly formed volcanic island
J
46
There are more trophic levels in
secondary succession.
Which of the following sequences MOST likely represents ecological succession
on a recently abandoned farm?
A
grasses  flowering plants  shrubs  maple trees
B
maple trees  shrubs  flowering plants  grasses
C
shrubs  grasses  maple trees  flowering plants
D
flowering plants  maple trees  shrubs  grasses
3rd Six Weeks Exam Review
47
Pioneer species such as lichen and moss inhabit an area after a major
disturbance, such as a volcanic eruption. Over time, other species are found in
the disturbed area, and the number of pioneer species decreases.
Why does the number of pioneer species decrease?
F
The amount of available sunlight is reduced. The pioneer species can no
longer thrive.
G
The area has more soil to support complex plants. The competition decreases
the pioneer species role.
H
The area is more susceptible to the wind. Seeds are captured in the pioneer
plants and germinate at a higher rate.
J
The temperature is not as extreme as it was following the disturbance. Fewer
of the pioneer species reproduce.
3rd Six Weeks Exam Review
48
A flower bed is created at a school so flowers can be planted in the
Fall.
Over the summer it is uncared for. Which of the following could the
students expect to find when they come back to school?
A
B
C
D
3rd Six Weeks Exam Review
Exploring Levels of Organization
Questions 41-49
41
The food that you eat travels from your mouth, down your esophagus, into your
stomach, and through your small and large intestines. As the food passes
through your body, it is digested, and you get important nutrients from the food.
Which of the following is the correct term used to describe a group of body parts
working together to perform a specific function?
A
an organism
B
a tissue
C
an organ system
D an organ
42
Living things are made up of cells. Cells are organized at different levels to form
very complex living organisms like your body. Each level has a specific job to
perform. Which of the following lists these levels in the correct order of
organization from the simplest to the most complex?
F
cell, tissue, organ, organ system, organism
G
organism, organ system, organ, tissue, cell
H
tissue, cell, organ, organism, organ system
J
organ, organ system, organism, cell, tissue
3rd Six Weeks Exam Review
43
All of the following are true except –
44
All of the following are types of
tissue except –
A Skin is an organ.
B Tissues are made up of organs.
C Each organ is made up of its own
kind of tissue.
D Tissues are made up of cells.
45
Which of the following is a
characteristic shared by all
organisms?
A
All organisms are made up of
at least one cell
B
All organisms are made up of
tissues.
C
All organisms have organ
systems.
D
All organisms can use
photosynthesis.
3rd Six Weeks Exam Review
F muscle
G epithelial
H the stomach
J connective
46 What is represented in the diagram?
F
a cell
G
a tissue
H
an organ
J
an organ system
47
48
A cactus is covered with a waxy
layer to prevent water loss. Which
type of tissue is this?
A
nervous
B
skeletal
C
protective
D
connective
The diagram shows parts of the
human body. These parts work
together to help you digest the food
you eat.
Which term describes what you see
in the diagram?
F
cell
G
tissue
H
organ
J
organ system
3rd Six Weeks Exam Review
49
The liver is an important part of the
digestive system. Which of the
following levels of organization can
be found in the liver?
I. cell
II. tissue
III. organ
IV. organ system
V. organism
A
I
B
I & II
C
III & IV
D
IV & V