Which statement describes why your body is a system?

It has parts that work together.

It uses oxygen and releases carbon dioxide.

Which statement describes plants but not animals?

They use light energy to carry out their life processes.

They are multicellular organisms.

They eat other organisms to obtain nutrients that store energy.

Which statement correctly describes how friction affects a soccer ball rolling across a field?

It reduces the speed of the ball.

It increases the speed of the ball.

It does not change the ball's motion.

It changes the ball's direction.

The population density of dragonflies in a meadow gradually increased over one summer. What most likely caused this change?

Birds that eat dragonflies moving out of the area.

Birds that eat dragonflies moving into the area.

Decrease in resources that dragonflies need.

Which example is the best thing to measure with a stopwatch?

the time it takes a toy car to roll down a small ramp

the distance between your house and school

how many hours an eclipse lasts

how far a car can go on a gallon of gasoline

Which statement is an inference based on the image?

Saturn is not the only planet in the solar system with rings.

Saturn is the only planet in the solar system with rings.

Saturn is more massive than Uranus.

Saturn and Uranus are made of the exact same elements.

Which example is a development in technology that increased our knowledge about stars and other planets?

discovery of the subatomic particles

improvements made to the microscope

Which statement describes how nonrenewable energy resources differ from renewable energy resources?

Only a renewable energy resource can be replaced as quickly as it is used.

Only a nonrenewable resource can be replaced as quickly as it is used.

Only a nonrenewable energy resource is expensive to use.

Only a nonrenewable energy resource harms the environment.

Which statement describes why a pond is a system?

In a pond, the fish and frogs eat the insects and plants.

The water in a pond can be polluted by chemicals from farm fields nearby.

Which statement correctly compares asteroids and planets?

Both asteroids and planets revolve around the Sun.

Only planets revolve around the Sun.

Both asteroids and planets are large and gaseous.

Only planets are found in our solar system.

Which statement correctly describes a positive impact of using cars?

Cars make transportation faster.

Cars give off chemicals when they burn gasoline.

Cars make it easier to observe distant objects.

Using cars results in acid rain forming.

Which definition best describes a scientific model?

representation of a real object or system

possible answer to a scientific question

factor that is changed during an investigation

scientific fact based on repeated experimentation

Which is an example of pollution that damages the air?

fertilizers transported by runoff

Which energy conversion occurs when a stick of dynamite explodes?

potential energy to kinetic energy

kinetic energy to potential energy

mechanical energy to chemical energy

electrical energy to mechanical energy

Which statement best describes why a model is a good way to explain the solar system?

A model can be used to shrink something very large to a more manageable size.

A model can be used to enlarge something that is very small.

A model always includes the Sun in the middle of the solar system.

A model represents the planets bigger than they really are, compared to the distances between them.

High speed limits can put people in excessive danger from car accidents. Scientific research indicates that lowering speed limits decreases the number of people who are killed in car accidents. However, as speed limits are lowered, traffic congestion often increases, making it difficult to get to places they need to be. Which statement describes a risk of lowering speed limits?

decrease in deaths from accidents

increase in deaths from accidents

Which species will most likely undergo extinction when its environment changes?

a species that is not suited for the new environment and cannot move to another location.

a species that adapts to a changing environment through a genetic mutation

a species with variations, some of which are suited for the new environment

a species that is not suited for the new environment and moves to another location

A laundry detergent manufacturer claims its detergent to be 100 percent efficient in taking out all tough stains. Which variable should be tested in order to evaluate the manufacturer's claim?

vary the amount of detergent used

Which statement describes a disadvantage of using wind energy?

Wind farms must be constructed where winds blow steadily throughout the year.

Wind farms are expensive to build and the energy is expensive to use.

Wind farms must be constructed along rivers or coasts.

Using wind energy releases hazardous gases into the air.

A foreign species of aquatic plant know as Hydrilla was recently introduced to freshwater bodies in Pennsylvania. It rapidly reproduces, forming a mat of vegetation under the surface of the water that outcompetes the native vegetation for space, light, and nutrients. When introduced to a new lake, which impact will Hydrilla most likely have on the population of native aquatic plants in the lake?

act as a limiting factor to reduce population size

act a a limiting factor to increase population size

act a a predator to stabilizer population size

Two forces act on a cart rolling east. Force A pushes the cart toward the north. Force B pulls the cart toward the south but with twice the amount of force as Force A. Which statement correctly describes how the forces will affect the cart?

Because the forces are unbalanced, the cart will change direction.

Because the forces are balanced, the cart will not be affected by the forces.

Because the forces are unbalanced the cart will not be affected by the forces.

Because the forces are balanced, the cart will change direction.

Which is an example of a good scientific question?

What is the average height of a beagle?

Is green a nicer color than yellow?

Do beagles make better pets than poodles?

Which definition correctly describes a fault?

break that forms in Earth's surface along which movement occurs

bending of rock layers without breaking as plates collide

release of melted rock and gases through an opening in Earth's crust

rapid movement of sediment downhill

Pablo eats a peach and an orange. Then he states that oranges taste better than peaches. Which example correctly describes Pablo's statement?

It is an opinion, because it can change from one person to the next.

It is scientific theory, because it is supported by evidence.

It is a fact, because it is supported by observations.

It is a scientific theory, because it is testable.

PSSA Review 2023

Authored by Susan Feese

Science

8th Grade

NGSS covered

Used 7+ times

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105 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

You need to measure the mass of sugar in an experiment. Which instrument should you use?

triple beam balance

ruler

graduated cylinder

beaker

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which event is shown in the diagram?

uplift

volcanic eruption

erosion

earthquake

Tags

NGSS.MS-ESS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

You state the hypothesis that pea plants grow tallest in sandy soil. To test your hypothesis, you must conduct an experiment. Which pair of variables should both be kept constant during the experiment?

type of soil and type of plant

amount of water and amount of sunlight

type of soil and height of plants

type of soil and amount of sunlight

Tags

NGSS.MS-LS2-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which energy resource does not produce harmful waste or pollution?

oil

coal

solar energy

nuclear energy

Tags

NGSS.HS-ESS3-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

This is a model of the human heart. Which subject would this model be most useful for studying?

how the heart interacts with the brain

different kids of animal hearts

how the heart has changed over time

parts of the human heart

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

During a visit to a park, Robin smelled a variety of flowers. She became curious and asked the question, "Do roses smell better than petunias?" Which statement correctly describes Robin's question?

It is a good scientific question because it is precise.

It is a poor scientific question because it is not precise.

It is a good scientific question because it can be answered by taking measurements.

It is a poor scientific question because it compares flowers.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

White fur helps the Arctic hare blend into its snowy environment and avoid being eaten by predators. Which term best describes this feature of the Arctic hare?

biotic factor

acquired trait

genetic mutation

adaptation

Tags

NGSS.MS-LS4-4

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PSSA Review 2023

You need to measure the mass of sugar in an experiment. Which instrument should you use?

Which event is shown in the diagram?

You state the hypothesis that pea plants grow tallest in sandy soil. To test your hypothesis, you must conduct an experiment. Which pair of variables should both be kept constant during the experiment?

Which energy resource does not produce harmful waste or pollution?

This is a model of the human heart. Which subject would this model be most useful for studying?

During a visit to a park, Robin smelled a variety of flowers. She became curious and asked the question, "Do roses smell better than petunias?" Which statement correctly describes Robin's question?

White fur helps the Arctic hare blend into its snowy environment and avoid being eaten by predators. Which term best describes this feature of the Arctic hare?

Which kind of pattern are the circular structures in the picture an example of?

Which statement describes why your body is a system?

Which impact results from open pit mining?

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