LSD Unit:   2a       Michigan Curriculum Framework (2000)       "Using" Science Benchmarks

V.2.e.1


LSD Units
 
2a
2b
5b

Describe how water exists on earth in three states.
Key concepts: Liquid (K-2) - visible, flowing, melting, dew. Solid (K-2) - hard, visible, freezing, ice. Gas (3-5) - invisible, water vapor, moisture, evaporating. See PCM-IV.2 e.1.
Real-world contexts: Examples of water in each state, including dew, rain, snow, ice, evidence of moisture in the air, such as "fog" on cold bathroom mirrors; examples of melting, freezing, and evaporating.

V.3.e.1


LSD Units
 
Ka
2a

Describe weather conditions.
Key concepts: Atmosphere is a blanket of air around the earth, air is a substance; see PME-IV.1 e.1 (attributes of substances). Air has temperature - cold, hot, warm, cool. Cloud cover - cloudy, partly cloudy; foggy. Precipitation - rain, snow, hail, freezing rain. Wind - breezy, windy, calm. Severe weather - thunderstorms, lightning, tornadoes, high winds, blizzards.
Tools: Thermometer, wind sock, rain gauge.
Real-world contexts: Daily changes in weather; examples of severe weather.

V.3.e.2


LSD Units
 
Ka
2a

Describe seasonal changes in Michigan's weather.
Key concepts: Seasons and types of weather - fall, cool nights and warm days; winter - snowy and constantly cold, getting dark early in the evening; spring - warmer days, often rainy with thunderstorms; summer - hot days and warm nights, daylight lasting until late in the evening.
Real-world contexts: Examples of visible seasonal changes in nature.

V.3.e.3


LSD Units
 
Ka
2a

Explain appropriate safety precautions during severe weather.
Key concepts: Safety precautions - safe locations, sirens, radio broadcasts, severe weather watch and warning.
Real-world contexts: Examples of local severe weather, including thunderstorms, tornadoes and blizzards, examples of local community safety precautions, including weather bulletins and tornado sirens.