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7th grade science review Flashcards | StudBud
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7th grade science review
7th grade science review
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60 cards
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1
What are the round green structures in this picture, and what is its job?
It is the nucleus and it controls cell functions.
It is the cell wall, it provides structure and support
It is the membrane, controls what comes in or out
It is a chloroplast and it makes food for the plant cell
2
How does the function of the lungs affect the amount of oxygen and carbon dioxide in the blood?
They help the amount of O and carbon dioxide go up
help amount of O go up and carbon dioxide go down.
help amount of both carbon dioxide and oxygen go down .
help the carbon dioxide go up and oxygen go down
3
The organisms that are best adapted for their environment survive and reproduce. This is called
Natural Selection
Genetic Variation
population dynamics
Selective Breeding
4
Areas found in the mantle where hot material rises and cooler material sinks
conduction currents
ocean currents
convection currents
radiation currents
5
What do you know about the density of the water?
It is the same density as the alcohol
It is more dense than the plastic cube and corn syrup
It is more dense than the alcohol and the oil
It is less dense than the alcohol and the corn syrup
6
The purpose in plants having seeds with “parachutes”, “wings”, “burrs”, or fruit is.
To attract a pollinator
To Allow the seeds to get a better view of the land
To escape predators
To disperse seeds
7
What organ(s) removes liquid waste from the blood in the form of urine?
Small intestine
Kidneys
Heart
Lungs
8
What do we call similar bone structures that indicate a link to a common ancestor?
Homologous Structures
Vestigial Structures
evolution
species
9
How many parents are involved in asexual reproduction?
0
1
3
2
10
Which of the following statements best explains why Earth is layered?
order by size, large in center, small outside
order by weight, heavier to the center, lighter outside.
order by density, most dense in center, least dense outside
order by temperature, hottest in center, coolest outside.
11
What adaptive advantage does the Bull snake have because of it's similarity to the Diamondback?
Predators leave it alone because it might be poisonous.
The head shape is best for biting and swallowing prey.
The colors and patterns provide good camoflage
The body length is not visible when the snake is coiled.
12
Which of these are evidence for evolution?
Color
Fossils
Intelligence
tails
13
Gene therapy _______________________.
treats a genetic disease
is a way to talk through your genetic problems
identifies a suspect
tests a person's DNA for mutations
14
A boundary where 2 plates move towards each other.
Insurgent
Convergent
Transform
Convergent
15
The picture shows a diagram of a human liver. What level of organization is the liver?
Tissue
Organ
Cell
Organism
16
The bending, tilting, molding of earth materials in response to stress
erosion
cementation
deformation
deposition
17
a long, narrow, and steep depression that forms on the ocean floor from subduction?
fissure
trench
mountain
valley
18
fossils only appear in which type of rock?
igneous
sedimentary
metamorphic
19
Parents are heterozygous for widows peak (wp), what % would not get it? (W=wp, w=no wp)
75%
100%
25%
50%
20
If a baby antelope inherits slightly longer legs, how does that adaptation help it survive?
It will be taller, so it can see farther away for hunting
It will be faster and will likely survive to reproduce
It will run slower, because its long legs get in the way
It will be more attractive to other antelope
21
Which type of reproduction results in offspring that are most different from the parent
sexual
unisexual
non-sexual
asexual
22
Why did birds on the Galapagos Islands have different beaks than birds on the mainland?
Had different food to eat
they thought it looked prettier
Had different predators
23
Similar bone structures in cats, humans, and whales suggest that...
They all fly
They had a common ancestor
they were born in the same location
They all swim
24
The best form of evidence to show the age and history of the earth comes from?
geologists
living organisms
the motion of plates
fossils
25
By studying fossils, scientists have developed a timeline of life on earth called...
Evolution
Natural Selection
The fossil record
plate tectonics
26
What do a rat, mosquito, and salmon have in common?
They have legs.
They reproduce asexually.
They reproduce sexually.
They can swim
27
Which of the following is an example of genetic engineering?
picking a flower
Rats that glow
breeding a mule (from donkey and horse)
breeding closely related huskies
28
Why is most of Earth’s iron and nickel found in the Earth’s core?
They have a higher density than most of Earth’s materials
They have a lower density than most of Earth’s materials
They are lighter than most of Earth’s materials
They are heavier than most of Earth’s materials
29
In order for metamorphic rock to become igneous rock it must....
melt, then cool
be broken down
melt
cool, then melt
30
Farmers have harvested and bred corn for what trait?
large kernels
tall plants
smell
teosinte
31
A characteristic that helps an organism survive and reproduce in its environment is called...
osmosis
Homologous Structure
Adaptation
Variation
32
The gradual change in a species or population over a period of time is called..
Genetics
plate tectonics
Evolution
Adaptation
33
Breeding of cows to produce the most milk is
osmosis
artificial selection
natural selection
cloning
34
Which of the following would you find in a plant cell but not in an animal cell?
Chloroplast and cell wall
Chloroplast and cytoplasm
Cell wall and cytoplasm
Nucleus and Chloroplast
35
What is an evidence of plate movement
fossil remains of similar organisms in S. America & Africa
forest fires
Similar animals on the same continent
mountain ranges that are different
36
Where do earthquakes mostly occur?
in California
on volcanoes
under buildings
along plate boundaries
37
Which event happened first in Earth History?
photosynthesis
humans
dinosaurs
land plants
38
Geologists can determine whether a region was terrestrial or marine by studying
current environment
genetics
fossil organisms
structure
39
Which type of reproduction results in offspring that are different from the parent organisms?
asexual
sexual
acquired
nonsexual
40
New construction can be made safer by
building on soft ground
anchoring to bedrock
making the first story of a building the smallest
using the cheapest building materials
41
Which is the best example of how knowledge of artificial selection affects life?
A birdwatcher feeds seeds to birds
A student watches a snake eat a mouse
A person plants a garden in her backyard
A dairy farmer breeds cows to produce more milk
42
The Earth's largest layer and consists mostly of magnesium, silicon and iron
outer core
crust
mantle
inner core
43
ribbon-like layers are a property of which type of rock
sedimentary
igneous
metamorphic
44
The process by which moving material is laid down
erosion
decomposition
deposition
cementation
45
Why aren't all structures in areas with geologic hazards built for maximum safety?
it is too difficult
You can't protect against geologic hazards
Geologic hazards can't be predicted
it is too expensive
46
Left over body parts that have no use are called....
homologous structures
limited structures
Variations
Vestigial Structures
47
Which is not an example of evidence that shows how animals have evolved
A human growing their hair really long
Darwin’s finches and their beaks
Bones in giraffes show necks getting longer over time
Horses getting hooves instead of toes
48
A time when no sediments were preserved in a region is called
superposition
deposition
uniformitarianism
an unconformity
49
a break in a body of rock along which one block slides relative to another
fissure
crack
fault
trench
50
Where are most volcanoes found?
along the plate boundaries
in the ocean
in the center of the earth
in the mountains
51
Rocks are formed with the oldest layers on the bottom and the youngest layers on the top is
uniformitarianism
unconformities
superposition
erosion
52
A flower represents what type of reproduction?
sexual
asexual
unisexual
nonsexual
53
Which is the correct order of the levels of body organization from simple to complex?
organism, tissue, organ system, organ, cell
cell, tissue, organ, organ system, organism
cell, organ, organ system, tissue, organism
organism, organ system, organ, tissue, cell
54
To make an older building safer or reinforce a structure is known as?
remodeling
safety reconstruction
safety reconstruction
retrofitting
55
How do the root systems benefit grasses?
they firmly anchor the plant to the ground
they make food for the plant
they make sugar from air and sunlight
it makes it impossible for the plant to die
56
Sediment comes from?
Compacting & Cementing
Cooling
Heat & Pressure
Weathering
57
Scientists believe this layer of earth consists of mostly oxygen, aluminum, and silicon.
mantle
outer core
crust
inner core
58
Which geologic feature is a slow process?
stream erosion
volcanic eruption
Earthquake
Landslide
59
What advantage would this predator's camouflage give when hunting prey?
The spider can make a web to capture prey
The prey won't be able to see the spider until it's too late
It blends in with the flower, so it can get nectar
The spider won't get eaten
60
sedimentary rock becomes metamorphic through
heat & pressure
melting and cooling
wind & erosion
compacting & cementing
