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WorksheetsScience STAAR pt. 2
Total questions: 25
Worksheet time: 52mins
Name
Class
Date
1.
An atom of a certain element has 36 protons, 36 electrons, and a mass number of 84. At room temperature this element is a very stable gas. How many neutrons are in this atom?
a)
45
b)
46
c)
47
d)
48
2.
What plate boundary feature is also shown?
a)
A ridge formed by an inactive convergent boundary
b)
A valley forming at an active divergent boundary
c)
A fault forming at an active transform boundary
d)
A volcano formed by an active transform boundary
3.
Based on this diagram, how do the characteristics of Star 1 and Star 2 compare?
a)
Star 1 is cooler and less bright than Star 2.
b)
Star 1 is hotter and brighter than Star 2.
c)
Star 1 is cooler and brighter than Star 2.
d)
Star 1 is hotter and less bright than Star 2.
4.
Which two types of organisms in this aquatic food web have a producer–consumer relationship?
a)
Microscopic algae and white suckers
b)
Small invertebrates and amphipods
c)
Phytoplankton and mummichogs
d)
Amphipods and channel catfish
5.
Water with which of these conditions would cause the most competition for resources among all three species of fish?
a)
Very cold, very clear, and very fast
b)
Very warm, very clear, and very slow
c)
Mild temperatures, some suspended particles, flows very fast
d)
Mild temperatures, suspended particles, flows at a medium speed
6.
Which of these elements is in this group?
a)
Lithium
b)
Strontium
c)
Aluminum
d)
Silicon
7.
At which location is the gravitational potential energy of the water the greatest?
a)
Location W
b)
Location X
c)
Location Y
d)
Location Z
8.
Which area of the coastline has most likely experienced the greatest effect of erosion from waves over hundreds of years?
a)
Area N
b)
Area P
c)
Area S
d)
Area T
9.
Which of these formulas contain equal numbers of nitrogen atoms?
a)
Formulas I and III
b)
Formulas I and IV
c)
Formulas II and III
d)
Formulas I, II, and V
10.
Based on the dichotomous key, in what order should this insect be classified?
a)
Mantodea
b)
Raphidioptera
c)
Coleoptera
d)
Lepidoptera
11.
Investigators using a special telescope determined that a certain quasar was emitting waves with a frequency of 1 4. 1 × 109 Hz.
The investigators were most likely using a telescope that detects —
The investigators were most likely using a telescope that detects —
a)
microwaves
b)
visible light
c)
x-rays
d)
gamma rays
12.
A basketball with a mass of 0.60 kg is accelerated with a force of 10.8 N. If resisting forces are ignored, what is the acceleration of the basketball to the nearest m/s2?
a)
16 m/s2
b)
17 m/s2
c)
18 m/s2
d)
19 m/s2
13.
Scientists are studying the effects of climate change on the Baltic Sea. Which statement best explains why biodiversity in the Baltic Sea could decrease if these changes occur?
a)
Fewer types of plants and animals are found in warm water than in cool water
b)
Plants and animals adapted for living in saltwater will grow more slowly in water that has less salt.
c)
Plants and animals adapted for living in saltier conditions will not be able to survive and reproduce.
d)
Animals adapted for living in warm water will eat all the plants and animals adapted for living in cool water.
14.
What lunar phase occurred on July 4, 1776?
a)
Waning gibbous
b)
Waxing gibbous
c)
Waning crescent
d)
Waxing crescent
15.
Aluminum, sulfur, and chlorine are elements found on the periodic table. Tests involving these three elements would show that at normal room temperature —
a)
sulfur is malleable and aluminum conducts electricity
b)
chlorine is malleable and conducts electricity
c)
aluminum is malleable and conducts electricity
d)
all three elements are malleable and conduct electricity
16.
What do these volcanoes indicate about plate tectonics in the region?
a)
The volcanoes form an island arc, indicating a converging plate boundary.
b)
The volcanoes form a line, indicating a diverging plate boundary
c)
Two plates are moving past each other, causing faulting and magma formation.
d)
Two plates are moving apart, creating new seafloor.
17.
The total mass of the cyclist and the bicycle is 100.0 kg. Based on this information, what is the acceleration of the cyclist?
a)
0 6. m6 /s2 backward, because the force of the air slows the cyclist down
b)
0 6. m6 /s2 forward, because the applied force is greater than the force of the air
c)
2 3. m/s2 backward, because the forces are opposite and not equal
d)
2 3. m/s2 forward, because the cyclist’s inertia is greater than the force of the air
18.
How many atoms are represented in the reactants of this equation?
a)
6
b)
12
c)
24
d)
36
19.
Which of the following best describes the velocity of an object?
a)
30 m/s
b)
30 m east
c)
30 m/s east
d)
30 m/s2
20.
A student stands at the point marked X on the topographic map below.
What height in meters must the student climb in order to reach the top of the hill?
What height in meters must the student climb in order to reach the top of the hill?
a)
245 m
b)
253 m
c)
236 m
d)
260 m
21.
A chemist is identifying the elements present in a sample of seawater. What characteristic of an element’s atoms always determines the element’s identity?
a)
The number of protons
b)
The number of neutrons
c)
The location of valence electrons
d)
The number of valence electrons
22.
Copper interferes with photosynthesis algae and other aquatic plants.
What would be the most likely result of an accidental spill of these compounds in an aquatic environment?
What would be the most likely result of an accidental spill of these compounds in an aquatic environment?
a)
The fish would grow larger than usual.
b)
The zooplankton population would increase
c)
The plants would increase in size but decrease in number
d)
The plant populations would be reduced.
23.
Based on the law of action–reaction, in what direction will the sled most likely move as the student jumps off?
a)
North
b)
East
c)
South
d)
West
24.
How many predators shown in this food web are omnivores?
a)
1
b)
2
c)
3
d)
4
25.
Tropical rain forests have the greatest biodiversity of any type of land ecosystem. How does biodiversity contribute to the sustainability of an ecosystem?
a)
The presence of more species with different adaptations makes it more likely that some
organisms will survive an ecological disaster
b)
Greater genetic variation within species makes it more likely that some individuals will
survive a disease outbreak.
c)
The presence of a variety of herbivore species that can feed on a large number of different
producer species helps ensure abundant prey for predators in the ecosystem.
d)
All of the above
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