Phase change

A phase change is a change from one state to another. One phase change that I saw outside of class was when an ice cube turned into water, I placed one ice cube on the table and I saw that it was slowly turning into water. This happens because the ice cube wants to be the same temperature as the table. The table is giving its heat to the ice cube so the ice cube's molecules will start to move faster, and when the molecules move faster they have harder time holding on to each other, so the ice cube becomes less solid and more liquid. The heat is being removed from the table and adder to the ice cube. The ice cube changed from a solid to a liquid, this transition his called melting.

Too Hot/ Too Cold

        Three things that heat up at different rates are: water, metal and glass. This is because some substances requiere less heat energy to increase their temperature, this is called "Specific Heat". Also since metal is a conductor and glass an insulator it would be easier for the energy to go through the metal so it will get heated up faster. 🔥

Doppler Radar

    I think that waves are used to show what is happening on the weather by showing when there's storms, huracanes or other natural disasters. Probably when the waves have a higher frequency is when the storms are getting closer to us and when the frequency is lower it means that it is far away.

   After some reacher I know that the basics of radars is that a beam of energy, called radio waves, is emitted from an antenna. As they strike objects in the atmosphere, the energy is scattered in all directions with some of the energy reflected directly back to the radar.