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WorksheetsIntegrated Science 3 - Unit 1 & 2 Revision
Total questions: 89
Worksheet time: 59mins
What does the term "electricity" describe?
The transfer of energy that powers devices like lights.
The storage of energy within a battery.
The process of creating energy from sunlight.
The generation of sound through power lines.
What is true about energy transfer to power communities during both stable conditions and blackouts?
There are several subsystems that are important for understanding energy transfer.
Energy always flows without interruption during a blackout.
Energy transfer stops completely when a blackout occurs.
Only solar energy can power communities during blackouts.
Energy will stop transferring in a circuit when:
A complete circuit is formed.
The power source is turned off.
There is a break in any of the paths (a broken circuit).
The energy demand is too high.
What happens when you plug in an electronic device?
It creates a giant circuit from the device to a power source that may be far away.
The device generates its own energy.
The device stores energy for later use.
The device directly generates electricity from the air.
What is a short circuit?
A perfectly functioning circuit that powers devices.
A circuit where energy does not flow at all.
A direct conducting path from one side of the energy source to the ground or the other side of the source.
A system that always causes energy to transfer efficiently.
What can cause a blackout in an energy system?
A perfectly functioning circuit.
A single short circuit in the system.
The transfer of energy through normal systems.
A balanced energy demand and supply.
Which of the following can affect the implementation of engineering solutions?
Engineering constraints.
Unlimited resources.
A lack of demand for energy.
Unchanging environmental conditions.
What must happen for electrical energy to be produced?
What likely caused the spike in energy demand during the Texas blackout in February 2021?
A drop in the supply of electrical energy.
Cold temperatures during the event.
A high supply of renewable energy.
An increase in sunlight in the region.
Where does the energy used to create electricity in a power plant come from?
Directly from the sun.
From Earth’s systems.
From stored energy in the power plant.
From the moon’s gravitational pull.
Why are engineering decisions about energy production complex?
They require simple criteria for success.
They involve straightforward, easy-to-quantify measures.
They require defining criteria for success that might not be easy to quantify.
They are always the same regardless of location.
What is one of the key components in many power plants?
Loops of copper wire and powerful magnets.
Solar panels generating energy directly.
How can energy transfer occur through contact?
By using sound waves.
Through motion causing energy transfer via contact (and vice-versa).
By using light to transmit energy.
Only in high-voltage systems.
What happens when moving matter (e.g., wind or steam) moves the magnets inside a generator?
It generates a direct current with no energy loss.
It causes energy transfer into wires through changing fields.
It stores energy for future use.
It reduces the efficiency of the generator.
What causes electrons to heat up the atoms of the wire material?
The motion of magnets inside the generator.
The sloshing of electrons back and forth.
The absence of electrical fields.
The movement of matter away from the wire.
What is one impact of power outages in Texas, especially during the February 2021 blackout?
Power outages are always evenly distributed.
People in neighborhoods with “essential” buildings were unaffected by power loss.
All neighborhoods had equal access to power during the outage.
What is one design solution for preventing energy crises?
Designing power grids that only use solar energy.
Creating interconnected power grids to increase supply when necessary.
Storing all energy in batteries without using grids.
Relying on a single power source to meet all demand.
What is the role of energy storage systems in an electric grid?
To make the grid more unreliable.
To provide power when the energy supply drops.
To store energy indefinitely for use only during blackouts.
To eliminate the need for energy production.
When redesigning an electric grid, what factors must be considered?
Only the cost of materials.
A range of constraints, including cost, safety, reliability, and aesthetics.
Solely the safety of the grid.
Only the reliability of the grid.
What can help guide decisions about trade-offs in energy grid solutions?
Input from interested parties and people we know.
Following a fixed set of criteria that never changes.
Ignoring the concerns of local communities.
Using only technical data and no social feedback.
How does a turbine transfer energy to electrons in a wire?
By using magnetism to move electrons through the wire.
By applying pressure directly to the wire.
By heating the wire to produce electricity.
By blocking the flow of electrons in the wire.
What is the main reason that energy storage systems help prevent blackouts?
They store energy only for use when there is excess power.
They release energy when there is a drop in power supply.
They are used to produce renewable energy.
They block energy flow during high demand.
Which factor is most affected by cold temperatures during the Texas blackout?
The demand for energy decreased.
The supply of energy decreased.
Energy production increased.
Wind energy production was unaffected.
What must be done to prevent future energy crises like the Texas blackout?
Isolating the electric grid from other regions.
Winterizing energy infrastructure like gas pipelines and windmills.
Relying solely on one energy source.
Reducing the overall demand for energy.
What is one social impact of power outages during the Texas blackout?
All communities experienced power outages equally.
Richer neighborhoods had more power than poorer ones.
Power outages only affected rural areas.
Every household in Texas lost power at the same time.
How do engineers consider the environment when designing energy solutions?
They only focus on economic costs.
They ignore environmental concerns.
They weigh the environmental, social, and economic impacts of energy production.
Environmental concerns are less important than economic concerns.
What role do magnets play in power plants?
They store electrical energy.
They are part of generators that produce electricity.
They block the flow of energy.
They convert heat into energy directly.
Why is it important to consider aesthetics when redesigning the electric grid?
Aesthetics have no impact on grid design.
The physical appearance of energy infrastructure can affect public acceptance.
Aesthetics are only important in urban areas.
Aesthetics can be ignored if the system is efficient.
What is one reason that interconnected power grids are beneficial?
How can engineering solutions to energy production address societal needs?
A. By focusing solely on technical efficiency.
B. By balancing economic costs with the needs of communities and the environment.
C. By ignoring the impact on local communities.
D. By prioritizing speed over long-term sustainability.
Which statement is true about stability in systems?
A. Stability is always constant, regardless of the scale.
B. Stability depends on the scale of the system being observed.
C. Stability only applies to small systems.
D. Stability means no change ever happens.
What is an important tool that scientists and engineers use to understand why phenomena occur?
A. Changing scales.
B. Ignoring different scales.
C. Studying only small systems.
D. Focusing on immediate causes without considering broader context.
What happens when objects are in contact with each other?
They exert contact forces on each other.
They always repel each other.
They move away from each other.
They exert no forces on each other.
What is the net force on an object?
The sum of all the forces acting on an object.
The difference between the largest and smallest forces.
The force applied by only one object in the system.
Zero when there is no movement.
What does it mean if forces are balanced along every axis?
The object will move in one direction.
The net force is zero.
The object will always stop moving.
The forces are unbalanced and the object accelerates.
What is a component of a two-dimensional vector?
A part of the vector.
The total force.
The direction of the vector.
The sum of all forces acting on an object.
How can forces at different scales help explain Earth's systems?
What can large-scale changes in Earth systems, like earthquakes or plate motion, result from?
A. Differences in forces acting on matter in the system.
B. Changes in the weather.
C. Human activities on Earth.
D. The Earth's magnetic field.
What happens when forces are unbalanced?
A. Energy is transferred.
B. Energy is not transferred.
C. The object stays in place.
D. The object absorbs energy without moving.
What happens to solid materials when force is applied to them?
A. They always break instantly.
B. They deform elastically up to a point.
C. They change color.
D. They freeze immediately.
What happens when solids deform past their elastic limit?
A. They return to their original shape.
B. They permanently deform, cracking or breaking.
C. They stop transferring energy.
What does the speed of a wave through matter depend on?
The temperature of the wave.
The matter through which the wave is passing.
The density of air only.
The size of the wave.
What does seismic velocity data provide evidence of?
Earth’s magnetic field.
The movement of the ocean.
Earth being composed of layers.
The exact depth of Earth's crust.
What is true about Earth's layers?
Earth has a solid inner core, a liquid outer core, a mantle, and a crust.
Earth’s layers are all liquid.
Earth’s outer core is solid.
Earth has no mantle.
What causes unbalanced forces in different parts of the mantle?
Differences in temperature and density.
The movement of tectonic plates alone.
Only seismic activity.
The Earth's magnetic field.
What happens when the temperature of matter in the mantle increases?
Particles move slower and get closer together.
Particles move faster and farther apart, lowering density.
Particles stop moving.
The volume of matter decreases.
How does convection occur in Earth's interior?
Gravitational forces and pushing forces from beneath explain the cycling of matter.
Convection does not occur in Earth's interior.
Only gravitational forces are at play.
The mantle remains static and does not cycle.
What is nuclear energy modeled as being stored in?
The Earth's crust.
The mass of the atomic nucleus.
The energy fields of matter.
The Earth's magnetic field.
What happens during radioactive decay?
Protons, neutrons, and particles leave the atom, transferring kinetic energy.
No energy is transferred.
The atom stops emitting energy.
The atom absorbs energy from its surroundings.
What is the primary source of energy that drives mantle convection?
What is the source of energy for radioactive decay at the subatomic scale?
Solar energy.
Radioactive decay at the subatomic scale.
Tidal forces.
Gravitational pull from the moon.
Radioactive decay follows a characteristic:
Linear growth pattern.
Exponential decay law.
Constant rate over time.
Wave-like pattern.
What can be determined from the ratio of parent to daughter elements in rocks?
The exact location of the rock.
The age of the rock.
The temperature of the rock.
The color of the rock.
What is true about the rock in the middle of the Afar region?
Most of it is very old, dating back hundreds of millions of years.
It formed in the last few million years.
It consists entirely of sedimentary rock.
It has remained unchanged for billions of years.
What is true about continental crust compared to oceanic crust?
Continental crust is older and denser than oceanic crust.
Continental crust is younger and denser than oceanic crust.
Continental crust is older and less dense than oceanic crust.
As you move outward from spreading plate boundaries, what happens to basalt rocks?
They become younger.
They get older.
They remain at the same age.
They turn into sedimentary rocks.
What does the age of basalt rocks at the plate boundaries suggest?
They were created at the boundary and pushed outward over time.
They formed millions of years before the boundary existed.
They were formed by volcanic activity in the interior of the Earth.
They formed only after the plates stopped moving.
What is true about the rock in the Afar region?
It suggests a similar process to the plate boundary spreading.
It is entirely older than the surrounding rocks.
It is not related to the processes happening at plate boundaries.
It formed through only volcanic processes.
What does increasing temperature in the mantle cause?
The mantle becomes more dense.
The mantle cools and contracts.
The mantle particles move faster and occupy a larger volume.
The mantle stops moving.
Which of the following is a consequence of unbalanced forces in Earth’s mantle?
A. Convection currents.
B. A static mantle with no movement.
C. Earthquakes only near the core.
D. The Earth's crust remains unchanged.
What does radioactive decay help to understand about Earth's interior?
A. It does not affect Earth’s interior.
B. It is the primary source of energy driving mantle convection.
C. It causes the Earth's crust to cool.
D. It causes the moon's gravitational pull.
What is electric current?
Electric current is the flow of electric charge through a conductor.
Electric current is the flow of air through a conductor.
Electric current is the flow of heat through a conductor.
Electric current is the flow of water through a conductor.
___________________ is the ability to do work by movement of electric charge (electricity)
Chemical Energy
Potential Energy
Thermal Energy
Electrical Energy
The kw-hr is a unit of
Voltage
Power
Energy
Current
Imagine you're a superhero with the power to manipulate energy! But remember, according to the Law of Conservation of Energy, energy cannot be __________ or __________, it can only be __________ from one form to another. Can you fill in the blanks in the correct order?
Destroyed
Created
Transformed
Transformed
Created
Destroyed
Transformed
Destroyed
Created
Created
Destroyed
Transformed
What is the unit of Electrical Power?
Joule
Watt
Where
Amp
Strong wind spinning a wind turbine can generate which type of energy?
nuclear
electrical
thermal
chemical
What is the main advantage of renewable energy sources?
They will run out
They are cheap to produce
They will not run out
They are limited
Which of the following is a renewable energy source?
Natural Gas
Biomass
Coal
Oil
What is the main advantage of renewable energy sources?
They are always available
They are cheap to produce
They do not cause pollution
They are limited
A PATH along which electricity can flow is a ___________________?
light bulb
switch
insulator
circuit
What do we call an area where more then two plates interact in different ways
plate boundary zones
hot spots
convergent boundaries
subduction
Which of these tectonic plate boundaries is most likely to form a volcano.
a continental plate colliding with a continental plate
an oceanic plate sliding past a continental plate
a continental plate sliding past a continental plate
an oceanic plate colliding into a continental plate
Which statement best describes why fossils of the same land-dwelling species have been discovered in both South America and Africa?
The organism migrated to two continents
The organisms were separated by the formation of new mountain ranges
The organisms became extinct due to climate change on these continents
These organisms once lived on one large landmass that later split into two continents
A fan is plugged into an extension cord. The extension cord is plugged into a wall outlet. How does the extension cord help the fan work?
The extension cord makes the fan more powerful.
The extension cord makes the fan easier to operate.
The extension cord transfers sound energy to the fan.
The extension cord transfers electric currents from the outlet to the fan.
