• The law of gravity says no fair jumping up without coming back down. 

• When they broke open molecules, they found that they were only stuffed with atoms. But when they broke open atoms, they found them stuffed with explosives. 

• When people run around and around in circles we say they are crazy. When planets do it we say they are orbiting. 

• Rainbows are just to look at, not really to understand.

• South America has cold summers and hot winters, but somehow they still manage.

• Most books say our sun is a star. But it still knows how to change back into a sun in the daytime. 

• Water freezes at 32 degrees and boils at 212 degrees. There are 180 degrees between freezing and boiling because there are 180 degrees between north and south.

• A vibration is a motion that cannot make up its mind which way it wants to go. 

• There is a tremendous weight pushing down on the center of the Earth because of so much population stomping around up there these days.

• Many dead animals in the past changed to fossils while others preferred to be oil.

• Genetics explain why you look like your father and if you don't why you should.

• Vacuums are nothings. We only mention them to let them know we know they're there. 

• Some oxygen molecules help fires burn while others make water, so sometimes it's brother against brother.

• Some people can tell what time it is by looking at the sun. But I never have been able to make out the numbers.

• We say the cause of perfume disappearing is evaporation. Evaporation gets blamed for a lot of things people forget to put the top on. 

• To most  people solutions mean finding the answers. But to chemists solutions are things that still are all mixed up. 

• In looking at a drop of water under a microscope, we find there are twice as many Hs as Os.

• Clouds are high flying fogs.

• I am not sure how clouds get formed. But the clouds know how to do it, and that is the important thing. 

• Clouds just keep circling the earth around and around. And around. There is not much else to do. 

• Water vapor gets together in a cloud. When it is big enough to be called a drop, it does. 

• Humidity is the experience of looking for air and finding water. 

• We keep track of the humidity in the air so we won't drown when we breathe.

• Rain often is known as soft water, oppositely known as hail. 

• Rain is saved up in cloud banks.

• In some rocks you can find the fossil footprints of fishes.

• Cyanide is so poisonous that one drop of it on a dog's tongue will kill the strongest man.

• A blizzard is when it snows sideways.

• A hurricane is a breeze of a bigly size. 

• A monsoon is a French gentleman.

• Thunder is a rich source of loudness. 

• Isotherms and isobars are even more important than their names sound. 

• It is so hot in some places that the people there have to live in other places. 

• The wind is like air, only pushier.