After days of heavy rain, a river near Carlos’s town rises over its banks and covers roads and yards. The water moves fast and can sweep cars away, and the floodwater may be dirty and unsafe. People are warned not to drive through water on the road. What weather hazard is described?
- Drought
- Flood (correct answer)
- Hurricane
- Blizzard
Explanation: This question tests 3rd grade ability to identify weather-related hazards (NGSS 3-ESS3-1: make claim about merit of design solution that reduces impacts of weather-related hazard—identification is prerequisite). Weather hazards are dangerous weather conditions that can damage property and threaten people's lives—they include tornadoes (violently rotating winds 100-300+ mph extending from thunderstorm to ground), hurricanes (massive rotating storms from ocean with 74+ mph winds and storm surge flooding), floods (water overflow onto normally dry land from heavy rain or rivers overflowing), blizzards (heavy snow + strong winds + low visibility + extreme cold), droughts (extended period without rain causing water shortages and crop failures), and heat waves (prolonged extreme heat causing heat stroke risk). Floods involve water rising and overflowing, drowning is primary danger. The hazard described in this scenario includes a river rising over its banks after days of heavy rain, covering roads and yards with fast-moving water that can sweep cars away. The description mentions dirty and unsafe floodwater, warnings not to drive through water on roads. These characteristics match flood features. Choice B is correct because it accurately identifies the hazard as a flood based on the key characteristics described. Specifically, river overflowing its banks after heavy rain, water covering normally dry areas like roads and yards, and fast-moving water that can sweep away cars all match flood characteristics. The description of warnings about driving through water further confirms this is a flood. This shows understanding of how to identify weather hazards by recognizing their distinctive features and dangers. Choice A (Drought) is incorrect because droughts involve lack of water over extended periods, not excess water overflowing. Common error where students see "water" and think of any water-related hazard, but drought is opposite—too little water, not too much. For example, the description clearly states river rising and overflowing, which is excess water characteristic of floods, not water shortage of droughts. Choice C (Hurricane) is incorrect because while hurricanes can cause flooding, the description specifies river overflow from heavy rain, not ocean storm surge. Choice D (Blizzard) is wrong as blizzards involve snow and cold, not rain and river overflow. Help students identify weather hazards: Create hazard identification cards with key features: Tornado: Rotating winds 100-300+ mph, funnel cloud ground to sky, narrow path destroys everything, sudden, loud roar, Midwest USA common. Hurricane: Massive ocean storm, 74+ mph winds, storm surge floods coast, 100+ miles wide, days warning, June-November season. Flood: Water overflow, from heavy rain or river overflow, drowning danger (6 inches moving water knocks down adult), anywhere. Blizzard: Heavy snow + strong winds + low visibility (whiteout), extreme cold, northern areas, 3+ hour duration. Drought: Long period (weeks/months/years) without rain, crops fail, water shortage, develops slowly. Practice matching descriptions to hazards: Give scenario with key features ("River overflows after heavy rain, water covers roads"), students identify (Flood—water overflow + covering dry land are key clues). Use decision tree: Is it about water overflowing? → Flood. Long dry period? → Drought. Emphasize: Floods = too much water, Droughts = too little water.