Most were from 5th and 6th graders. One horsepower is the amount of energy it takes to drag a horse 500 feet in one second. You can listen to thunder after lightening and tell how close you came. Rainbows are just to look at, not to really understand. South America has cold summers and hot winters, but somehow they still manage.
Most books now say our sun is a star.
But it still knows how to change back into a sun in the daytime. Lime is a green-tasting rock. Some oxygen molecules help fires burn while others help make water, so sometimes it's brother against brother. We say the cause of perfume disappearing is evaporation. Evaporation gets blamed for a lot of things people forget to put the top on.