Match the three phases of matter.
1. fixed volume; variable shape gas
2. fixed volume; fixed shape liquid
3. variable volume; variable shape solid

Matter is defined as anything which has volume and mass. Three phases of matter: Solid, liquid and gas.

Solid: The substances in which particles are closely packed, has definite volume and definite shape.

Liquid: Particles are loosely packed as comparison to solid, has definite volume and take the shape of container i.e. indefinite shape.

Gas: Particles are loosely packed, has indefinite volume and indefinite shape.

Thus,  gas: variable volume; variable shape

liquid: fixed volume; variable shape    

solid: fixed volume; fixed shape

the tides are influenced by both the moon and the sun, it's easy to see that when the sun lines up with the moon and the earth, as during a new moon or full moon, the tidal effect is increased. these are known as spring tides, named not for the season, but for the fact that the water "springs" higher than normal. on the other hand, if the sun and the moon are 90 degrees apart in relation to an observer on earth as during the first quarter moon or third quarter moon, then high tides are not as high as they normally would be. this is because despite its greater distance, the sun's mass allows it to exert enough gravitational force on the oceans that it can negate some of the effects of the moon's pull. this phenomenon of lower high tides is called a neap tide. if you need more information on this topic visit moonconnection.com.

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