//change 5 to the total number of questions
var total=5
var question=new Array()
for (i=1;i<=total+1;i++){
temp="choice"+i+"=new Array()"
eval(temp)
}
var solution=new Array()
var explanation=new Array()

/*Below lists the questions, its choices,the solution,  and finally the explanation to each question. Follow the exact format below when editing the questions. You may have as many questions as needed.*/

question[1]=" Which part of the water cycle forms clouds?"
choice1[1]=" Evaporation"
choice1[2]=" Condensation"
choice1[3]=" Precipitation"
choice1[4]=" Transpiration"

question[2]=" Which of these is NOT necessary for clouds to form in the air?"
choice2[1]=" Moisture (water vapor)"
choice2[2]=" Dust and other particles i the air (cloud nuclei)"
choice2[3]=" Cool temperature"
choice2[4]=" Lightning"

question[3]=" True or False? Fog is a type of cloud"
choice3[1]=" True"
choice3[2]=" False"
choice3[3]=" "
choice3[4]=" "

question[4]=" Which of these clouds indicate severe weather?"
choice4[1]=" Cumulonimbus"
choice4[2]=" Tornado"
choice4[3]=" Stratus"
choice4[4]=" a and b"

question[5]=" True or False? The water you drink originally came from a cloud."
choice5[1]=" True"
choice5[2]=" False"
choice5[3]=" "
choice5[4]=" "

solution[1]="b"
solution[2]="d"
solution[3]="a"
solution[4]="d"
solution[5]="a"

explanation[1]="Clouds form during condensation, when water changes from an invisible vapor (gas) to a liquid in the air. Clouds are not just made up of one big water droplet. They contain millions of smaller droplets! Clouds are an important part of the water cycle; without them, there would be no rain, snow or sleet! Clouds cycle water that has evaporated from the ocean and precipitates it onto land, where it runs into rivers, lakes and streams, eventually leading back to the ocean."
explanation[2]="Lightning happens in clouds, but it is not necessary for clouds to form. The other three ingredients are necessary. Clouds form when moist air rises, cools to the dew point (the temperature at which air is holding as much water vapor as it can) and condenses onto invisible particles like dust (called cloud nuclei) that are floating around in the atmosphere. Different clouds form at different heights in the sky, depending on the air temperature and pressure."
explanation[3]="You may have been in a cloud before, even if your feet never left the ground! Fog is a cloud that is touching the ground. It is formed when the air temperature and the dew point (the temperature at which air is saturated with water vapor) are the same, or about the same. It can form over the ocean, on mountaintops, during rainy weather or on cool and humid mornings anywhere. Areas in the United States that frequently have fog include the West Coast, the Appalachian Mountains and New England."
explanation[4]="Cumulonimbus clouds can be huge! Sometimes they can be five to 10 miles high into the atmosphere and five to 25 miles wide! They produce thunderstorms, which can include heavy rain, hail, lightning, thunder, high winds and even tornadoes. Tornadoes are clouds that rotate from the bottom of thunderstorm clouds with strong winds that sometimes reach over 200 miles per hour! Stratus clouds are low-level clouds that may rain, but do not themselves warn of severe weather."
explanation[5]="Without clouds, we would not have any drinking water! Drinking water comes from wells (groundwater) or reservoirs that collect water from a nearby river or lake. Precipitation (rain, hail and snow) refills groundwater and reservoirs. Some people even collect rainwater directly to water their lawns or to filter and drink. It is important to keep our rivers, lakes and streams clean because you never know where that water will end up next!"