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WorksheetsSTAAR REVIEW
Total questions: 50
Worksheet time: 54mins
Name
Class
Date
1.
Some dairy farmers want to increase the amount of milk produced by their cows. How can the farmers use selective breeding to increase milk production?
a)
By increasing the age of the cows that are bred
b)
By choosing cows that are high milk producers
c)
By limiting the number of offspring per cow
d)
By choosing cows that can produce milk after eating the most food
2.
A balance and a graduated cylinder are used to determine the density of a mineral sample. The sample has a mass of 14.7 g and a volume of 2.2 cm3 . What is the density of the mineral sample?
a)
0.15 g/cm3
b)
32 g/cm3
c)
13 g/cm3
d)
6.7 g/cm3
3.
The three vehicles shown below are all traveling at a speed of 15 m/s, but only the pickup truck has a changing velocity. The pickup truck has a changing velocity because the pickup truck —
a)
can accelerate faster than the other two vehicles
b)
can accelerate faster than the other two vehicles
c)
is traveling on a curve in the road
d)
needs a large amount of force to move
4.
The three vehicles shown below are all traveling at a speed of 15 m/s, but only the pickup truck has a changing velocity. The pickup truck has a changing velocity because the pickup truck —
a)
can accelerate faster than the other two vehicles
b)
can accelerate faster than the other two vehicles
c)
is traveling on a curve in the road
d)
needs a large amount of force to move
5.
The folded mountains in this model form at which type of plate boundary?
a)
transform boundary
b)
divergent boundary
c)
subduction boundary
d)
convergent boundary
6.
A researcher wants to experiment with an element that reacts like phosphorus (P) but has a greater atomic mass. Which element should the researcher select for the experiment?
a)
Nitrogen (N)
b)
Sulfur (S)
c)
Arsenic (As)
d)
Silicon (Si)
7.
*
a)
size
b)
life expectancy
c)
reproduction rates
d)
body temperatures
8.
Which of the following situations shows work being done?
a)
A student is sitting in a chair and holding both boxes.
b)
A student is holding the large box 1 m above the floor.
c)
A student is standing and holding the small box.
d)
A student is lifting the small box 0.5 m from the floor to a table
9.
*
a)
Species 1 can sprout only in freshwater, and Species 2 can sprout only in saltwater.
b)
Both species can sprout in freshwater and saltwater, but Species 2 can sprout in a higher salt concentration than Species 1.
c)
Both species need salt in their water, but Species 2 needs more salt than Species 1
d)
Species 1 can sprout only in water with a low salt concentration, but Species 2 is not affected by the salt concentration
10.
*
a)
Species 1 can sprout only in freshwater, and Species 2 can sprout only in saltwater.
b)
Both species can sprout in freshwater and saltwater, but Species 2 can sprout in a higher salt concentration than Species 1.
c)
Both species need salt in their water, but Species 2 needs more salt than Species 1
d)
Species 1 can sprout only in water with a low salt concentration, but Species 2 is not affected by the salt concentration
11.
The Milky Way galaxy is described as a disk of stars orbiting a central point on the disk. Which of these best explains why people on Earth cannot see the entire shape of the Milky Way?
a)
Earth is part of this galaxy
b)
Many more stars exist outside the galaxy
c)
The star in the center of the galaxy are extremely small
d)
The center of the galaxy consists of a dense cluster of stars
12.
*
a)
F The speed of the cart decreases as the cart rolls down the ramp because of friction between the cart and the ramp.
b)
The speed of the cart increases as the cart rolls down the ramp because the force acting on the cart is greater than the force of gravity
c)
The speed of the cart increases as the cart rolls down the ramp because the forces acting on the cart are unbalanced.
d)
The speed of the cart decreases as the cart rolls down the ramp because the forces acting on the cart are balanced.
13.
*
a)
F The speed of the cart decreases as the cart rolls down the ramp because of friction between the cart and the ramp.
b)
The speed of the cart increases as the cart rolls down the ramp because the force acting on the cart is greater than the force of gravity
c)
The speed of the cart increases as the cart rolls down the ramp because the forces acting on the cart are unbalanced.
d)
The speed of the cart decreases as the cart rolls down the ramp because the forces acting on the cart are balanced.
14.
*
a)
Boron (B)
b)
Carbon (C)
c)
Neon (Ne)
d)
Sodium (Na)
15.
The satellite photograph below shows a large meteorite crater that is 1200 m in diameter and 170 m deep. This crater is located in a flat, arid part of northeastern Arizona. How will this crater most likely change over time?
a)
It will get deeper as it fills with water
b)
It will rise up like a volcanic crater
c)
It will become less deep as the rim erodes
d)
It will widen as it fills with lava
16.
Certain species of whiptail lizards have only female individuals and no males. These lizards reproduce asexually. What is one disadvantage of asexual reproduction for these lizards?
a)
A new population can be established by a single individual in a relatively short period of time.
b)
All the members of a population are genetically very similar and less able to survive environmental changes.
c)
They are smaller than lizards that reproduce sexually.
d)
They are more likely to develop a variety of tail lengths.
17.
Two cars with different masses travel at the same speed down a hill toward a stop sign. What will happen when both cars apply brakes at the same time to stop?
a)
The car with the smaller mass will require less force to stop than the car with the larger mass.
b)
The car with the larger mass will maintain its velocity while traveling down the hill.
c)
The car with the smaller mass will take longer to stop than the car with the larger mass
d)
The car with the larger mass will have less inertia than the car with the smaller mass
18.
5 Which of the following best describes an electron?
a)
It has no charge and about the same mass as a proton.
b)
It has a negative charge and much less mass than a proton.
c)
It has a positive charge and much more mass than a neutron.
d)
It has a negative charge and about the same mass as a neutron.
19.
*
a)
Equator
b)
North Pole
c)
Tropic of Cancer
d)
Tropic of Capricorn
20.
A scientist spilled a few drops of dilute hydrochloric acid (HCl) on a lab table. For safety purposes, the scientist sprinkled some baking soda (NaHCO3) onto the spill. Which observation would provide the best evidence that a chemical reaction occurred?
a)
The baking soda and hydrochloric acid combined, and bubbles formed
b)
The baking soda absorbed the hydrochloric acid.
c)
Some of the baking soda dissolved in the hydrochloric acid
d)
The hydrochloric acid evaporated, leaving only the baking soda.
21.
*
a)
Position 1
b)
Position 2
c)
Position 3
d)
Position 4
22.
Which information could a student determine from only the chemical formula of a protein?
a)
The color of the protein
b)
The number of molecules in each sequence that makes up a protein
c)
The physical arrangement of atoms in the structure of the protein
d)
The number of atoms of each element in the protein
23.
What is one condition that is necessary for a hurricane to form?
a)
Warm ocean water
b)
A strong cold front
c)
Cold ocean water
d)
A strong warm front
24.
*
a)
1
b)
2
c)
3
d)
4
25.
*
a)
12CO2 + H20 --light--> C6H12O6 + O2
b)
CO2 + 9H20 --light--> C6H12O6 + O2
c)
CO2 + H20 --light--> 3C6H12O6 + O2
d)
6CO2 + 6H20 --light--> C6H12O6 + 6O2
26.
*
a)
Ginkgo
b)
Honey locust
c)
Horse chestnut
d)
Black maple
27.
*
a)
1
b)
2
c)
3
d)
4
28.
*
a)
Grasshoppers and snakes
b)
hawks and frogs
c)
frogs and snakes
d)
decomposers and grasses
29.
*
a)
F
b)
G
c)
H
d)
J
30.
Hay is made up of organic compounds. What are the main elements in many organic compounds?
a)
Helium, Carbon, Sodium
b)
Sodium, Hydrogen, Nitrogen
c)
Carbon, Hydrogen, Oxygen
d)
Radon, Oxygen, Helium
31.
Some students take care of a vegetable garden. When it is time to plant in the spring, the students leave part of the garden empty in order to observe ecological succession. Which of these will most likely occur first?
a)
development of topsoil
b)
growth of weeds and grasses
c)
growth of trees and shrubs
d)
development of a stream
32.
When trying to identify an unknown element, a scientist determines what other elements the unknown element reacts with chemically. Which property of the unknown element determines the other elements it reacts with?
a)
The total number of neutrons in the unknown element
b)
The total number of particles in the nucleus of the unknown element
c)
The number of protons in the nucleus of the unknown element
d)
The number of valence electrons in the unknown element
33.
Plants use energy from sunlight, water, and carbon dioxide to produce sugar. Which structure is found only in plant cells and helps plants capture energy from sunlight?
a)
vacuole
b)
nucleus
c)
chloroplast
d)
cell membrane
34.
**
a)
peninsula
b)
volcano
c)
delta
d)
plateau
35.
**
a)
1
b)
2
c)
3
d)
4
36.
**
a)
1
b)
2
c)
3
d)
4
37.
An atom has 25 protons, 30 neutrons, and 25 electrons. What is the charge of the atom’s nucleus?
a)
+25
b)
+30
c)
-25
d)
-30
38.
**
a)
condensation of water vapor
b)
surface runoff of precipitation
c)
conservation of water
d)
pollution of groundwater
39.
**
a)
the mass of a the plates
b)
the weight of the plates
c)
unbalanced force
d)
gravitational force
40.
Baleen whales eat zooplankton by taking a large amount of water into their mouth. These whales use special structures in their mouth to separate zooplankton from the water. Because baleen whales eat zooplankton, they are classified as —
a)
producers
b)
predators
c)
parasites
d)
hosts
41.
A student keeps a record of the phases of the moon for one month. On the first night of the student’s observations, the full moon is visible in the sky. After the full moon, which of these phases will the student observe next?
a)
waxing crescent moon
b)
waxing gibbous moon
c)
waning crescent moon
d)
waning gibbous moon
42.
**
a)
CO
b)
H2O
c)
CO2
d)
H2
43.
**
a)
fungi
b)
eubacteria
c)
plantae
d)
animalia
44.
**
a)
Barnard’s Star is less bright than the sun, has a surface temperature below 3,800 K, and is red.
b)
Barnard’s Star is less bright than the sun, has a surface temperature above 3,800 K, and is red.
c)
Barnard’s Star is brighter than the sun, has a surface temperature below 5,300 K, and is yellow.
d)
Barnard’s Star is brighter than the sun, has a surface temperature above 5,300 K, and is yellow
45.
Some scientists studying aquatic plants notice that flooding often leads to a decrease in the rate of photosynthesis among aquatic plants. Flooding causes more sediment to be suspended in the water. The increased sediment concentration decreases the amount of light that reaches the plants. Why does a decreased rate of photosynthesis lead to a decrease in a plant population?
a)
Less water is available for absorption.
b)
Less tissue is available for plant growth.
c)
Less energy is available for reproduction.
d)
Less soil is available for leaf development.
46.
**
a)
Barnard’s Star is less bright than the sun, has a surface temperature below 3,800 K, and is red.
b)
Barnard’s Star is less bright than the sun, has a surface temperature above 3,800 K, and is red.
c)
Barnard’s Star is brighter than the sun, has a surface temperature below 5,300 K, and is yellow.
d)
Barnard’s Star is brighter than the sun, has a surface temperature above 5,300 K, and is yellow
47.
**
a)
no longer tilted on its axis
b)
stopped rotating on its axis
c)
took an additional month to orbit the sun
d)
revolved around the sun in the opposite direction
48.
**
a)
one of the original compounds came out of solution
b)
the solutions reacted chemically
c)
some of the water froze into ice crystas
d)
rapid evaporation of water occurred, leaving a solid
49.
Why does Earth get more energy from the sun than from all the other stars in the universe combined?
a)
the sun is much larger than the other stars
b)
the sun is much hotter than the other stars
c)
the sun is much more dense than the other stars
d)
the sun is much closer than the other stars
50.
**
a)
the boat will move slower
b)
the boat will move faster
c)
the boat will stop
d)
the boat will move to the west
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