Generate Solutions for Impacts - 4th Grade Science
Card 1 of 20
Which surface best reduces flooding in a city: permeable pavement or solid concrete?
Which surface best reduces flooding in a city: permeable pavement or solid concrete?
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Permeable pavement. Permeable surfaces let water soak in rather than run off.
Permeable pavement. Permeable surfaces let water soak in rather than run off.
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What is the main purpose of an early warning system for hurricanes or floods?
What is the main purpose of an early warning system for hurricanes or floods?
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To give people time to prepare or evacuate. Early warnings allow protective actions before danger arrives.
To give people time to prepare or evacuate. Early warnings allow protective actions before danger arrives.
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Which building feature best reduces earthquake damage: flexible joints or rigid brittle connections?
Which building feature best reduces earthquake damage: flexible joints or rigid brittle connections?
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Flexible joints. Flexible joints allow buildings to sway without breaking.
Flexible joints. Flexible joints allow buildings to sway without breaking.
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What is the main purpose of a seawall on a coast with strong waves?
What is the main purpose of a seawall on a coast with strong waves?
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To reduce coastal erosion and protect land from waves. Seawalls block wave energy from reaching and eroding the shore.
To reduce coastal erosion and protect land from waves. Seawalls block wave energy from reaching and eroding the shore.
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Which option best reduces soil erosion by wind on a farm: windbreaks, removing fences, or cutting all trees?
Which option best reduces soil erosion by wind on a farm: windbreaks, removing fences, or cutting all trees?
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Windbreaks. Windbreaks are barriers that reduce wind speed and protect soil.
Windbreaks. Windbreaks are barriers that reduce wind speed and protect soil.
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What is the main purpose of wetlands near rivers and coasts?
What is the main purpose of wetlands near rivers and coasts?
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To absorb floodwater and slow erosion. Wetlands act like sponges that soak up excess water naturally.
To absorb floodwater and slow erosion. Wetlands act like sponges that soak up excess water naturally.
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Which action best reduces wildfire risk near homes: clearing dry brush or stacking firewood against the house?
Which action best reduces wildfire risk near homes: clearing dry brush or stacking firewood against the house?
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Clearing dry brush. Removing fuel sources prevents fire from reaching structures.
Clearing dry brush. Removing fuel sources prevents fire from reaching structures.
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What is the main purpose of a controlled burn done by firefighters?
What is the main purpose of a controlled burn done by firefighters?
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To reduce fuel so future wildfires spread less. Controlled burns remove excess vegetation that could fuel wildfires.
To reduce fuel so future wildfires spread less. Controlled burns remove excess vegetation that could fuel wildfires.
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What is the main purpose of terracing on a hillside farm?
What is the main purpose of terracing on a hillside farm?
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To slow runoff and reduce soil erosion. Terraces create flat steps that prevent water from rushing downhill.
To slow runoff and reduce soil erosion. Terraces create flat steps that prevent water from rushing downhill.
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What is the main purpose of a levee along a river during heavy rain?
What is the main purpose of a levee along a river during heavy rain?
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To keep rising river water from flooding nearby land. Levees create barriers that contain water within river channels.
To keep rising river water from flooding nearby land. Levees create barriers that contain water within river channels.
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What is the main purpose of bolting a house to its foundation in earthquake areas?
What is the main purpose of bolting a house to its foundation in earthquake areas?
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To reduce damage by keeping the building from sliding. Bolting prevents the house from shifting off its foundation.
To reduce damage by keeping the building from sliding. Bolting prevents the house from shifting off its foundation.
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What is the safest action during an earthquake: Drop, Cover, and Hold On or run outside immediately?
What is the safest action during an earthquake: Drop, Cover, and Hold On or run outside immediately?
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Drop, Cover, and Hold On. This protects you from falling objects and building collapse.
Drop, Cover, and Hold On. This protects you from falling objects and building collapse.
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Which option best reduces coastal erosion long term: planting dune grass or removing plants from dunes?
Which option best reduces coastal erosion long term: planting dune grass or removing plants from dunes?
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Planting dune grass. Grass roots stabilize sand and trap more sand over time.
Planting dune grass. Grass roots stabilize sand and trap more sand over time.
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Which action best reduces sinkhole risk: limiting water removal from underground or pumping much more groundwater?
Which action best reduces sinkhole risk: limiting water removal from underground or pumping much more groundwater?
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Limiting water removal from underground. Excessive groundwater removal causes underground spaces to collapse.
Limiting water removal from underground. Excessive groundwater removal causes underground spaces to collapse.
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Which solution best reduces landslides on a steep hill after storms: planting trees, paving, or removing plants?
Which solution best reduces landslides on a steep hill after storms: planting trees, paving, or removing plants?
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Planting trees. Tree roots hold soil in place and absorb excess water.
Planting trees. Tree roots hold soil in place and absorb excess water.
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Which action best reduces flood risk at home: building on stilts or building in a low spot near a river?
Which action best reduces flood risk at home: building on stilts or building in a low spot near a river?
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Building on stilts. Stilts elevate homes above typical flood water levels.
Building on stilts. Stilts elevate homes above typical flood water levels.
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What is the main purpose of sand dunes on a beach?
What is the main purpose of sand dunes on a beach?
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To act as a natural barrier against waves and storm surge. Dunes absorb wave energy and block water from moving inland.
To act as a natural barrier against waves and storm surge. Dunes absorb wave energy and block water from moving inland.
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What is the main purpose of an evacuation route sign in disaster-prone areas?
What is the main purpose of an evacuation route sign in disaster-prone areas?
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To guide people to safer areas quickly. Clear routes help people evacuate efficiently during emergencies.
To guide people to safer areas quickly. Clear routes help people evacuate efficiently during emergencies.
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Which action best reduces harm from a hurricane: boarding windows or opening all windows to equalize pressure?
Which action best reduces harm from a hurricane: boarding windows or opening all windows to equalize pressure?
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Boarding windows. Boards protect windows from flying debris; opening windows is dangerous.
Boarding windows. Boards protect windows from flying debris; opening windows is dangerous.
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What is the main purpose of a retention pond in a neighborhood?
What is the main purpose of a retention pond in a neighborhood?
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To collect stormwater and reduce flooding. Retention ponds hold excess water temporarily during heavy rains.
To collect stormwater and reduce flooding. Retention ponds hold excess water temporarily during heavy rains.
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