As they are Alkali metals (group 1), they are extremely reactive in both air and water so must be stored in kerosine to stop them from reacting with the air or water.
<span>vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear.</span>
Answer:
Matter can exist in one of three main states: solid, liquid, or gas. Solid matter is composed of tightly packed particles. A solid will retain its shape; the particles are not free to move around. Liquid matter is made of more loosely packed particles.
Key Takeaways: Examples of Solids, Liquids, and Gases
A solid has a defined shape and volume. A common example is ice. A liquid has a defined volume, but can change state. An example is liquid water.There are four natural states of matter: Solids, liquids, gases and plasma. The fifth state is the man-made Bose-Einstein condensates. In a solid, particles are packed tightly together so they don't move much.
Explanation:
Answer:
When an object vibrates, it causes movement in surrounding air molecules. These molecules bump into the molecules close to them, causing them to vibrate as well. This makes them bump into more nearby air molecules.
The Barometer: The barometer is a device meant for measuring the local atmospheric pressure. ...
Piezometer or Pressure Tube: ...
Manometers: ...
The Bourdon Gauge: ...
The Diaphragm Pressure Gauge: ...
Micro Manometer (U-Tube with Enlarged Ends):
