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PS Review Test- Mixed
PS Review Test- Mixed
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VA SOL; Physical, Life, IEES Mixed Review
Flashcards
45 cards
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Practice quiz
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Questions
45
Answers
1
Which change will increase the strength of a magnetic field produced by and electromagnet?
Add a battery
Reduce the number of turns of the coil
Remove the iron nail
Switch the direction in which the battery is connected
2
Which of these has been improved by genetic engineering?
Reduced number of pollinating insects
Visibility of insects to predators
Resistance of corn plants to insects
Growth of insects in cornfields
3
How many different elements are involved in the chemical reaction shown?
12
7
3
14
4
Based on the information in the chart, which is a constant in the student's investigation?
Energy expended during activity
Activity performed
Length of activity time
Equipment needed for activity
5
Which properties of an unknown liquid is found using a beaker, hot plate, & temperature probe?
Chemical Composition
Density
Boiling point
Oxygen level
6
A major scientific concern over nuclear energy is how to ___.
store the waste products safely
prevent the depletion of the ozone layer
reduce the high levels of carbon dioxide emitted in the air
deal with the large amounts of fossil fuel required
7
What is the independent variable in this investigation?
Amount of substance dissolved
Unknown substance used
Water temperature
Water volume
8
The clown fish have mucus that protect it from poisonous sea anemone. It is best described as?
a social heirarchy
an adaptation
an energy requirment
a relationship
9
Hurricanes form in tropical waters near the equator not higher latitudes because water is too?
shallow
cold
warm
deep
10
Which of these is a way that a person can help improve air quality?
Use a gas-powered lawn mower
Burn leaves in the fall
Carpool with several people
Build a compost pile
11
From 1965 to 1970, what data pattern did scientists observe in wolf and moose population?
An increase in wolf population and drop in moose population
Drop in wolf population and an increase in moose population
Increase in wolf population and increase in moose population
A drop in wolf population and a drop in moose population
12
Which of these is the best description of a typical organism in the Plant kingdom?
Makes its own food
Lacks a cell wall
Lacks a nucleus
Is unicellular
13
Which of these is an example of chemical weathering of rocks by water?
Limestone reacts with acid rain and dissolves.
Water freezes in rock cracks and causes the rock to split.
Mineral crystals form as water evaporates from rocks.
Moss collects and grows on the surface of rocks.
14
Volume of water decreases, water droplets form on mirror over pot. In this setup, water ___.
vaporizes then condenses
freezes then vaporizes
condenses then vaproizes
vaporizes then freezes
15
Which of these has the strongest gravitational field?
Jupiter
Sun
Earth
Saturn
16
An aquarium's temperature was measured every hour for 8 hours. Which best displays the data?
Picture graph
Line graph
Circle graph
Bar graph
17
What change would test, If friction increases then rolling distance of a marble will increase?
Height of the ramp and roughness of the ramp surface
Height of the ramp
Roughness of the ramp surface
Height and length of the ramp
18
When comparing a plant cell to an animal cell, only the plant cell will contain ____.
ribosomes
mitochondria
chloroplasts
chromosomes
19
Which of these best completes the conversion table?
1 km=1,000 mm; 1 m= 100cm
1 km= 1,000 m; 1m= 100mm
1 kim= 1,000 m; 1m= 100cm
1 km= 1,000 cm; 1m= 100mm
20
Which statement correctly describes the difference between the mesosphere and the stratosphere?
Temperatures decrease with altitude only in the stratosphere
Mesosphere contains fewer oxygen molecules than stratosphere
Air pressure is lower in stratosphere than the mesosphere
The mesosphere has more active weather than the stratosphere
21
Which is most likely the result of weasels and foxes depending on the same food source?
New species of prey will evolve in the area.
One of the populations will become herbivores.
Birthrates for both populations will increase.
The populations will compete with each other.
22
Which of these best explains why a soccer ball kicked in the air falls back to earth?
The motion of the ball is changed by external forces.
The force exerted on the ball is greater than gravity.
The acceleration of the ball in unstable.
The pressure on the ball changes with altitude.
23
Which is the best conclusion based on the table?
Less acidic the substance, faster steel
Less acidic the substance, faster steel wool has bubbles
More acidic the substance, faster steel wool turn to gas
More acidic the substance, faster it reacts with steel wool
24
The most important characteristic of a crop that grows in marshland is the ability to ____.
survive in dry conditions
mature quickly
attract a variety of pollinators
thrive in wet soil
25
What type of heat transfer is a metal spoon placed in a dish of ice cream that became cool?
Convection, because cold air currents made the spoon hot
Conduction, because the spoon contacted the cold ice cream
Conduction, because cold air currents made the spoon cold
Convection, because the spoon contacted the cold ice cream
26
Which organisms are producers in this food web?
grasshopper, rabbit, tree
shrew, snake, rabbit
hawk, wolf, deer
grass, shrub, tree
27
What facility relies on a nonrenewable source of energy?
A wind farm that uses wind turbines
A dam that uses the power of water
A power station that burns coal
A solar farm that collects sunlight
28
Place the terms in order of the simplest level to the most complex level of organization.
System, Cell, Organ, Tissue
Tissue, Organ, Cell, System
Cell, Tissue, Organ, System
System, Organ, Tissue, Cell
29
Why is water known as the "universal solvent"?
It dissolves only solid substances.
It dissolves all known substances.
It dissolves substances faster than all other solvents.
It dissolves the greatest number of substances.
30
White-footed mice have thicker fur than cactus mice, influenced most by differences in the ___.
food that they eat.
amount of predators they encounter.
environmental climates where they live.
time of day they are active.
31
Which is the result of using a more powerful motor to run and elevator?
The same amount of work is done in less time.
Less work is done in the same amount of time.
the same amount of time is needed to move the same distance.
A longer time is needed to move a shorter distance.
32
Which is an abiotic change in an ecosystem?
Aquatic predator survival rates increase.
Plant photosynthesis rates increase.
Fish species populations increase.
Annual rainfall totals for an area increase.
33
The physical expression of a trait in an organism is known as the ___.
phenotype
double helix
chromosome
genotype
34
Which water is protected from storms by barrier islands, has mixture of fresh and salt water?
Estuary
Ocean
Lake
Pond
35
Which of these best represents the freezing point of water in correct SI units?
-273oC
0oF
0oC
32oF
36
Which action will most reduce the use of nonrenewable energy resources in a school district?
Replacing current light with more efficient light
Installing low-flow faucets and toilets
Recycling worksheets and other paper products
Limiting the sweeping/mopping of classrooms to once a month
37
Th shaded row in the table is called a ___.
period
column
family
group
38
To provide power for heat and lights to a cabin with no power, which device is appropriate?
A voltmeter
An insulator
A resistor
A generator
39
Sound waves are unable to travel through ___.
a vacuum
a rock
air
water
40
As the frequency of a wave decreases, the wave's ___.
period decreases
wavelength increases
speed decreases
amplitude increases
41
Which three drawings best represent objects with kinetic energy?
basketballs, bat and base, bike
basketball, bat and base, tetherball
swing, bike riders, tetherball
swing, bike, bike riders
42
The tick birds alert about predators and eat ticks on the zebra, an interaction that is ___.
Competition
Mutualism
Parasitism
Commensalism
43
A cold air mass moves underneath a warm air mass causing the warm air to rise. This even is?
a stationary front
a warm front
an occluded front
a cold front
44
Which structures in egg and sperm cells carry the genes that will be transferred to offspring?
Cell Membranes
Chromosomes
Ribosomes
Vacuoles
45
Which characteristic is common to the four outer planets in our solar system?
Fast revolution
High density
Gaseous composition
Low mass
