Ohio Learning Standards for Science — Grade 2

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Air has properties that can be observed and measured. The transfer of energy in the atmosphere causes air movement, which is felt as wind. Wind speed and direction can be measured.


Water is present in the air as clouds, steam, fog, rain, ice, snow, sleet or hail. When water in the air cools (change of energy), it forms small droplets of water that can be seen as clouds. Water can change from liquid to vapor in the air and from vapor to liquid. The water droplets can form into raindrops. Water droplets can change to solid by freezing into snow, sleet or hail. Clouds are moved by flowing air.


Changes in energy affect all aspects of weather, including temperature, precipitation amount and wind.


Living things function and interact with their physical environments. Living things cause changes in the environments where they live; the changes can be very noticeable or slightly noticeable, fast or slow.


Living things that once lived on Earth no longer exist; their basic needs were no longer met.


Motion can increase, change direction or stop depending on the force applied.


The change in motion of an object is related to the size of the force.


Some forces act without touching, such as using a magnet to move an object or objects falling to the ground.