WorksheetsScience PSSA review
Total questions: 31
Worksheet time: 23mins
Name
Class
Date
1.
Which statements about scientific explanations are true?
I. Scientific explanations must prove that a hypothesis is true.
II. Scientific explanations should be based on evidence or data.
III. Scientific explanations must have logical and consistent arguments.
IV. Scientific explanations should use scientific principles, models, and theories.
a)
II and III only
b)
II, III and IV only
c)
I, II, III and IV
d)
I, II and III only
2.
Quantitative observations always include _______.
a)
words
b)
symbols
c)
numbers
d)
time
3.
What is the volume of the liquid in the graduated cylinder shown above?
a)
25.6 L
b)
23.1 L
c)
25.6 mL
d)
23.1 mL
4.
The triple-beam balance shown above measures in grams. What is the mass of the chick?
a)
10 kg, 7.5 g
b)
175 g
c)
17.5 g
d)
10.75 g
5.
Tony recorded data from his chemistry experiment in the following table. Which of the categories from Tony's data table includes qualitative observations?
a)
temperature
b)
volume
c)
mass
d)
color
6.
Emilio's teacher told his class that a controlled experiment's results are valid only if one factor in the experiment is changed and all the other factors remain constant. Why is this statement true?
a)
When only one factor is changed, you can be more certain that it caused the results.
b)
When only one factor is changed, you don't need to use a control.
c)
Changing several different factors in an experiment takes too much time.
d)
Changing several different factors in an experiment takes too many controls.
7.
Which of the following tools is used to observe objects that are very far away?
a)
hand lens
b)
anemometer
c)
microscope
d)
telescope
8.
Stuart designed and built a water filter in class. He wants to know if it will make water from lakes or streams safe to drink. Which of the following would it be best for Stuart to measure in an experiment in order to test his design and answer this question?
a)
the amount of bacteria and impurities in water both before and after it passes through his filter
b)
the diameter of the largest grain of dust, dirt, or sand that can pass through his filter
c)
the amount of time required for different volumes of water to pass through his filter
d)
the maximum force that can be applied to his filter without breaking it
9.
Which of the following is a good scientific question?
a)
Are dragons lizards or birds?
b)
How do star fish fall in love?
c)
Why do crickets chirp?
d)
Does eating less fat increase a mouse's life span?
10.
Which of the following statements is true regarding scientific hypotheses?
a)
There are no valuable hypotheses.
b)
Every hypothesis is valuable, whether or not it is testable.
c)
A testable hypothesis is valuable, even if evidence shows that it is false.
d)
A testable hypothesis is valuable only if all evidence supports it.
11.
What is the difference between a theory and an opinion?
a)
A theory is a scientific fact, while an opinion is not.
b)
An opinion is a scientific fact, while a theory is not.
c)
An opinion is supported by scientific evidence, while a theory is not.
d)
A theory is supported by scientific evidence, while an opinion is not.
12.
What do the lunar cycle, bird migration, and cell mitosis have in common?
a)
They are all included in the discipline called biology.
b)
None of them are predictable.
c)
They are all natural events that occur in a pattern.
d)
None of them are studied by scientists today.
13.
According to the law of conservation of matter, the number of ________ is not changed by a chemical reaction.
a)
products
b)
molecules
c)
bonds
d)
atoms
14.
Which of the following bodies of water are included in the freshwater biome?
I. Rivers
II. Oceans
III. lakes
IV. Streams
I. Rivers
II. Oceans
III. lakes
IV. Streams
a)
I, III, and IV only
b)
II only
c)
I and IV only
d)
I, II, III, and IV
15.
When precipitation falls onto land surfaces, it is either soaked into the ground or becomes runoff. Runoff is surface water that travels downhill and drains into streams and rivers.
The area of land where water is drained downhill into a body of water is known as a drainage basin, or _______.
The area of land where water is drained downhill into a body of water is known as a drainage basin, or _______.
a)
delta
b)
aquifer
c)
watershed
d)
water table
16.
The map shows some of the biomes present on the continent of Africa. Which of the following most likely describes the climate of San Pedro?
a)
extremely hot and dry all the time
b)
cold and rainy
c)
hot with a wet and dry season
d)
cold and icy
17.
Which of the following is true about mixtures and compounds?
a)
A mixture contains different substances that are not chemically combined with one another.
b)
Mixtures and compounds are both made of two or more different substances.
c)
A compound forms when different substances chemically combine to form a new substance.
d)
all of these
18.
Look at the picture of two different substances above. Which substance is a mixture?
a)
Y and Z
b)
neither Y nor Z
c)
Z
d)
Y
19.
Which of the choices below gives a true example of how a natural resource can be renewed?
a)
When the wind is calm, electric fans can be turned on to make the windmills move.
b)
When forests have been cut down, new native trees can be planted.
c)
When an area's natural gas has been used up, oxygen can replace the gas.
d)
When all of the coal is gone from a mine, new coal can be grown in its place.
20.
A golf ball is dropped off of the side of a building. Ignore the effects of air resistance. As the ball continues to fall freely, the kinetic energy of the ball
a)
increases
b)
decreases
c)
remains the same.
d)
equals zero.
21.
Which of the following is a form of energy?
I. kinetic
II. thermal
III. potential
IV. electrical
I. kinetic
II. thermal
III. potential
IV. electrical
a)
I and III only
b)
I, II, III, and IV
c)
IV only
d)
I, II, and III only
22.
Tamara pours hot tea into a cold mug. A few moments later, she picks up the mug, and the mug is now warm.
What is the main form of energy transfer involved in heating the mug?
What is the main form of energy transfer involved in heating the mug?
a)
radiation
b)
conduction
c)
convection
d)
all of these
23.
Melissa has a beaker of water. She adds heat energy to the water by placing the beaker over the flame of a Bunsen burner.
What happens to the motion of the water particles as Melissa adds heat energy to the water?
What happens to the motion of the water particles as Melissa adds heat energy to the water?
a)
The water particles move faster.
b)
The water particles move slower.
c)
The motion of the water particles does not change.
d)
The water particles stop moving.
24.
Thermal energy is transferred as heat from a warmer object to a cooler object until
a)
all of the energy from the cold object is transferred to the hot object.
b)
the temperature is the same in both objects.
c)
the thermal energy is converted into another type of energy such as light.
d)
all of the energy from the hot object is transferred to the cold object.
25.
Which of the following is an effect of pollution?
I. global warming
II. increase in human poulation size
III. acid rain
IV. ozone depletion
I. global warming
II. increase in human poulation size
III. acid rain
IV. ozone depletion
a)
I, II, and III only
b)
I, II, III, and IV
c)
I and II only
d)
I, III, and IV only
26.
Which of the following describes a chemical property of a metal?
a)
attracted to a magnet
b)
reacts with acid
c)
conducts electricity
d)
high melting point
27.
Calvin is pouring water through a sample of soil, and measuring the amount of time it takes 500 milliliters of water to pass through it. Soils that allow water to pass through them faster are more _______.
a)
permeable
b)
porous
c)
acidic
d)
fertile
28.
Which of the following processes most directly helps create soil from rocks?
a)
plate tectonics
b)
weathering
c)
melting
d)
pressure
29.
Seasonal changes occur when the Earth moves so that the Northern Hemisphere and the Southern Hemisphere are tilted more toward or away from the Sun. If the Northern Hemisphere is tilted toward the Sun and it is summer, what is happening in the Southern Hemisphere?
a)
The Southern Hemisphere is tilted away from the Sun, and it is winter.
b)
The Southern Hemisphere is tilted away from the Sun, and it is summer.
c)
The Southern Hemisphere is tilted toward the Sun, and it is winter.
d)
The Southern Hemisphere is tilted toward the Sun, and it is summer.
30.
During a total lunar eclipse, the Earth, Sun, and Moon are arranged in a line, and the Moon is completely dark.
In what order do the Earth, Sun, and Moon line up?
In what order do the Earth, Sun, and Moon line up?
a)
Sun, Earth, Moon
b)
Earth, Moon, Sun
c)
Moon, Sun, Earth
d)
Sun, Moon, Earth
31.
Many events that occur on Earth and in the solar system are related to the fact that most objects in the solar system move in regular and predictable patterns.
What causes objects in the solar system to move in these regular and predictable patterns?
What causes objects in the solar system to move in these regular and predictable patterns?
a)
gravitational forces
b)
nuclear forces
c)
frictional forces
d)
electrical forces
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