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STAAR Review
STAAR Review
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6th,7th and 8th grade staar review
Flashcards
60 cards
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Practice quiz
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Questions
60
Answers
1
If only 10% of energy gets transferred up the food chain, what happens to the 90%?
It gets wasted
It gets converted and lost as heat energy
They don't need it
They use it doing what is necessary to survive.
2
Speeding up, slowing down or changing direction.
balanced forces
velocity
accceleration
unbalanced forces
3
Which is not evidence of a chemical reaction?
gas bubbles
odor change
color change
it melts
4
Sustainability of an ecosystem greatly depends on.......
succession
biodiversity
genetics
climate
5
What organelle in the cell helps to metabolize and convert food into energy?
Cell Membrane
Chloroplast
Vacuole
Mitochondria
6
A prokaryote is:
A single celled organism with a nucleus
Grass
Bacteria
A single celled organism that has no nucleus.
7
What part of an energy pyramid has the smallest population?
Secondary Consumer
Primary Consumer
Tertiary (top) Consumer
Producers
8
Ultimately all of the energy in the food pyramids come from:
Grass
The sun
The Earth
The moon
9
Pick the
compound
that is organic.
FeO2
C6H12O6
C
NaOH
10
What is the main factor in the creation and location of hurricanes?
cold water
cold air
warm water
warm air
11
Sweating and shivering are controlled by what body systems?
integumentary, muscular,nervous
skeletal, integumentary,circulatory
nervous, excretory, reproductive
digestive,muscular,nervous
12
What is the name of the process
all
cells use to take in O
2
and release CO
2
?
Cell Respiration
Photosynthesis
Mitosis
Fermentation
13
What moon phase is 21 days after the new moon?
3rd quarter
1st quarter
full
next new
14
Which statement is part of the cell theory?
All cells have a nucleus
All living things are made of cells
All cells have chloroplasts
All cells come from other cells
15
Of the items hanging on the wall, which has the most potential energy?
the highest
the lowest
the one in the middle
all have the same
16
In the food web, who is a primary consumer?
Snake
Goat
Green Plants
Jackal
17
Which biome has the greatest biodiversity?
Tundra
Deciduous Forest
Desert
Tropical Rainforest
18
What is natural selection?
The rich organisms select others to survive
Nature selects traits for organisms randomly
Most odd looking organisms survive
Best traits have high survival/reproduction
19
Which of the following is abiotic?
Hamster
Fallen leaves
Hail
dandelion
20
Which animal is the prey?
Gazelle
Lions
Neither
Both
21
What is the density of a substance that has a mass of 25.4 g and a volume of 3.2 mL ?
9.7 g/mL
7.9 g/mL
28.6 g/mL
22.2 g/mL
22
What is the process used by plants to make Glucose and Oxygen?
Combustion
Mitosis
Photosynthesis
Cell Respiration
23
Which organelle is a storage sac for food ,water or wastes?
Chloroplast
Cell membrane
Mitochondria
Vacuole
24
How many O atoms in this formula? Fe
2
(NO
2
)
3
5
6
3
2
25
Which compound has 8 carbon atoms?
4 CO2
C6H12O6
8 CH4
CoNaC
26
How much force does it take to accererate a 5 kg object 40 m/s
2 ?
200 N
2 N
20 N
2000 N
27
What do the arrows in the food web represent?
Genetically related organisms
Dominant species
Transfer of energy
Most important animal
28
Convergent boundries are likely to produce....
earthquakes
rift valleys
mountains
trenches , volcanoes
29
How many protons does an atom of Cl have?
17
35
19
22
30
What is an organelle only found in a plant cell?
Cell Membrane
Lysosome
Cell Wall
Nucleus
31
If you knock a beaker off a table, what should you do first?
Pick glass up
Tell the teacher
Kick glass under the table
Runnnnnn
32
Why are there less consumers than producers?
Consumers just haven't eaten them all yet
Because they are bigger
Because only 10% of the energy is passed to the next level
Consumers get killed easier
33
Which statement involves work not being done?
riding a bicycle
pushing a book 20 meters
swinging a bat 3 feet
pushing a stalled car that will not move
34
Which words go with plants?
multicellular, eukaryotic, autotrophic
unicellular, eukaryotic, heterotrophic
unicellular, Prokaryotic, Autotrophic
multicellular, prokaryotic, heterotrophic
35
In the food web, which organism would have the largest population?
Mouse
Lion
Goat
Green Plant
36
Wich type of succession begins with rock, in a new place?
hurricanes
secondary
primary
tertiary
37
Which of these digestive system examples is a physical change?
stomach acids breaking down fat
saliva changing starch to sugar
stomach muscles churning food into mush
teeth chewing food into smaller pieces
38
Which best describes the energy transformations in using a hair dryer?
chemical, electrical, thermal
electrical, mechanical, thermal
electrical, potential, mechanical
mechanical, thermal, chemical
39
If a car travels 30 miles in .6 hours what is its average speed?
500 mph
5.5 mph
5 mph
50 mph
40
If the northern hemisphere is leaning away from the sun what season is it in each hemisphere?
North - fall South - spring
North - summer South - winter
North - spring South - summer
North - winter South - summer
41
Which of the following is an element?
O2
CO2
NaCl
NaOH
42
If an animal only eats producers, they must be a _______________
Herbivore
Omnivore
Autotroph
Carnivore
43
Periods on the periodic table tell you how many.......
neutrons
valence electrons
energy levels
isotopes
44
What structure in the cell allows things in or out and is semi permeable.
Cell wall
Cell membrane
mitochondria
Cytoplasm
45
What organelle controls all cell functions and genetics?
nucleus
chloroplasts
mitochondrion
vacuole
46
Which term describes the 2 weeks between a full moon to the next new moon?
tides
waxing
blue moon
waning
47
What are the levels of organization in biology, in order from small to large?
Cell, organ, organism, tissue, organ system
organ, organ system, cell, tissue, organism
cell, tissue, organ, organ system, organism
Organism, Cell, organ, organ system, tissue
48
Which 2 body systems release hormones /enzymes ?
excretory/ respiratory
skeletal / integumentary
endocrine/ digestive
reproductive/ muscular
49
A delta is a landform caused by ...........
weathering
deposition
gravity
erosion
50
Group and Familys on the periodic table tell you how many.......
energy levels
protons
valence electrons
neutrons
51
Organisms that make their own food inside their cells are called?
Autotroph
Heterotroph
Magictroph
Consumers
52
What is the acceleration of an object that is pushed with 20 N of force and has a mass of 10 kg
30 m/s2
200 m/s2
10 m/s2
2 m/s2
53
What occurs in plants?
only photosynthesis
Only cell respiration
Photosynthesis and Cell respiration
Neither
54
Which form of energy is related to motion and is measured by how fast?
kinetic
electrical
mechanical
potential
55
Which of the following elements is most likely malleable, ductile and a good conductor?
helium
magnesium
chlorine
boron
56
If an atom of boron has 5 protons and a mass of 11. How many neutrons does it have?
16
6
5
11
57
Which of the following is not a trait of asexual reproduction?
mixes genetic traits
Happens very quick
Identical offspring
Needs 1 set of genetic material
58
Newton's 1st law is known as the Law of......
Action-Reaction
gravity
Inertia
Force,mass, acceleration
59
Where are the brightest hottest stars on the HR diagram?
top right
bottom left
bottom right
top left
60
Which landforms would you expect at a divergent boundry?
mid ocean ridge
trench
volcano
rift valley
