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7th Grade Science Final Review Flashcards | StudBud
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7th Grade Science Final Review
7th Grade Science Final Review
30 terms
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StudBud Administration
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1,173 plays
Life science final for the 7th grade year.
Flashcards
30 cards
F
Practice quiz
P
Host live
L
Questions
30
Answers
1
The adaptation of spines on cacti helps to...
supress predators
supress prey
invite predators
invite prey
2
Which body systems supply the body with oxygen?
Respiratory and digestive
Circulatory and endocrine
Circulatory and respiratory
Digestive and endocrine
3
Primary succession (soil created) and secondary succession (regrowth after disaster) both...
keep land safe from human destruction.
Occur soon after events such as tornadoes and wildfires.
modify land so gradually more complex organisms may grow.
create a lack of biodiversity in the environment.
4
Which body systems remove carbon dioxide?
Digestive and endocrine
Circulatory and respiratory
Circulatory and digestive
Circulatory and endocrine
5
Of the following compounds, which are organic?
Carbon C and Copper Cu
Hydrobromic acid HBr and hydrosulfuric acid H2SO4
Sodium chloride NaCl and magnesium hydroxide Mg(OH)3
Benzene C6H6 and ethylene glycol C2H4(OH)2
6
Which of these animals has a producer-consumer relationship as depicted by this food web?
Mice
Owls
Foxes
Rabbits
7
Which of the following may produce offspring genetically identical to the parent?
Yeast (asexual reproduction)
Amoebas (asexual reproduction)
Zebras (sexual reproduction)
Humans (sexual reproduction)
8
Why are bacteria able to evolve so much faster than humans?
Bacteria have a shorter lifespan--more mutations over time.
Bacteria have a longer lifespan--fewer mutations over time.
Bacteria take over the host.
Bacteria reproduce asexually.
9
Deer may carry parasitic ticks that infect predators. What animal is likely to become infected?
Jaguar
Pine Tree
Fox
Squirrel
10
White penguins have adapted to be camouflaged in snow. What happens if the snow melts?
They'll be easier for predators to spot against dark land.
They will leave Antarctica and fly to the North Pole.
They will still blend into the mountain environment.
They will die out immediately.
11
When the number of predators goes down, the amount of prey...
goes up
goes down
stays even
fluctuates unpredictably
12
If people live in the mountains here, where would it be best to build a wastewater plant?
far east
far north
far south
far west
13
A natural gas stove converts...
chemical energy to electrical energy
mechanical energy to thermal energy
thermal energy to electrical energy
chemical energy to thermal and light energy
14
Which two body systems release hormones?
Respiratory and circulatory
Circulatory and digestive
Respiratory and endocrine
Endocrine and digestive
15
A girl rolls a ball at 6N of force. The resistant force (friction) is 2N. What's the net force?
8 N (Newtons)
3 N (Newtons)
4 N (Newtons)
6 N (Newtons)
16
Which animal has a consumer-producer relationship and at least three carniverous predators?
snake
goat
rabbit
mouse
17
A soccer ball sitting still at the top of the hills is kicked 31 feet. This is an example of...
potential energy to kinetic energy
mechanical energy to chemical energy
chemical energy to mechanical energy
kinetic energy to potential energy
18
A baseball player hits a ball that weighs .5kg. The ball accelerates at 10m/s
2
. Net force:
5 Newtons
50 Newtons
.05 Newtons
500 Newtons
19
What happens to sediment (soil, rocks, and more) when a wildfire occurs near a river?
River sediment increases; plants that secured it are dead.
River sediment becomes contaminated by ash.
River sediment stays the same; fires don't affect rivers.
River sediment decreases; plants that secured it are dead.
20
If 56 Newtons were added to the resistance force (arrow side), the block would experience...
Unbalanced upward force
Unbalanced downward force
Balanced downward force
Balanced upward force
21
Which is correct?
Mitochondria store water; vacuoles convert energy
Mitochondria regulate cell contents; vacuoles convert energy
Mitochondria convert energy; vacuoles store water
Cell walls regulate cell contents; vacuoles convert energy
22
Are the block and the resistance force (see arrow) balanced or unbalanced forces?
100 Newtons
Unbalanced forces
Balanced forces
It's impossible to tell.
23
Which body systems supply the body with nutrients?
Circulatory and endocrine
Digestive and endocrine
Circulatory and respiratory
Circulatory and digestive
24
Ball rolling at 2mph, car traveling at 25mph, monkey swinging on branch. Unbalanced force:
Cup sitting on dinner table
Car traveling at 25mph
Monkey swinging on branch
Ball rolling at 2mph
25
Cell theory states:
The nucleus is the basic unit of a cell.
Viruses are a type of cell.
All living thing are made of at least one cell.
Most cells come from pre-existing cells.
26
At what speed (in meters per second) is the object traveling? Remember, S = D / T,
2 m/s
5 m/s
50 m/s
10 m/s
27
Snow hares have smaller ears (sensitive to cold). What may happen as global warming increases?
Snow hare species may adapt to life in the water.
Snow hare species may adapt with bigger ears over time.
Snow hare species may adapt with smaller ears over time.
Snow hare species may migrate to warmer, less snowy regions.
28
Which is correct?
Cell walls regulate contents; chloroplasts produce sugar
Cell walls store water; chloroplasts create protein
Mitochondria regulate cell contents; vacuoles convert energy
Mitochondria produce sugar; chloroplasts store water
29
When we launch a rocket into space... (clue: Newton's third Law of Motion)
The fuel burns, causing an electrical energy transfer.
The kinetic energy of the rocket is reduces 300 miles up.
The potential energy of the rocket is displayed as it flies.
Fuel burns, and gases pushing from below propel the rocket.
30
These two helicopters are both flying at 173mph. One is flying 27 feet higher than the other.
same kinetic energy/different gravitational potential energy
same kinetic energy/same gravitational potential energy
different kinetic energy/same gravitational potential energy
different kinetic energy/dif. gravitational potential energy
