//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]=" The word MIGRATION means:"
choice1[1]=" The seasonal movement of a species from one region to another"
choice1[2]=" A change in direction"
choice1[3]=" A nest built by a bird"
choice1[4]=" A change in an animal or insect\'s body form as it grows into an adult"

question[2]=" When do most birds fly during migration?"
choice2[1]=" In the morning and evening"
choice2[2]=" During the day"
choice2[3]=" During the night"
choice2[4]=" All of the above"

question[3]=" What is the longest distance a migratory bird has been known to fly?"
choice3[1]=" 100 miles"
choice3[2]=" 22,000 miles"
choice3[3]=" 5 billion miles"
choice3[4]=" 7,500 miles"

question[4]=" Migratory birds need to stop at resting places during their migrations to find food, water, and shelter. Which of these backyard items might attract migratory birds?"
choice4[1]=" Bird feeder"
choice4[2]=" Bird bath"
choice4[3]=" Trees, shrubs, and other native plants"
choice4[4]=" All of the above"

question[5]=" True or false: Migratory birds have special adaptations, or different body features and behaviors, that help them find their way during migration."
choice5[1]=" True"
choice5[2]=" False"

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

explanation[1]="Migration occurs when an animal, insect, or bird species moves from one region to another. Most bird migrations occur when the seasons change. Migratory birds found in colder areas of North America migrate south to warmer regions of the U.S. and Central and South America each fall, where they have plenty of food for the winter. Then, each spring they migrate north where temperatures have warmed, trees have grown new leaves, and there is plenty of food, water, and shelter to raise their young."
explanation[2]=" Most birds, especially songbirds and shorebirds, fly during the night during their migrations. This helps them avoid predators that might eat them, and also allows them to avoid strong winds and hot temperatures that are more likely to occur during the day. Birds that migrate at night must flap their wings in order to fly. However, some larger birds like hawks fly during the day, and use air currents to get them where they need to go."
explanation[3]="The distance a migratory bird travels depends on many things, and differs from species to species. The Arctic Tern has the longest migration of any bird known: from the Arctic to the Antarctic! Before winter, Arctic Terns leave their summer grounds in Alaska, northern Canada, Greenland, and other lands in the far north, and fly south to the southernmost tip of South America and islands near Antarctica. Then, they make the around-the-world trip again before summer. Because they move from summer in the Northern Hemisphere to summer in the Southern Hemisphere, they see the most sunlight per year of any migratory bird!"
explanation[4]="Backyard habitats can be helpful resting spots where migratory birds can find food, water, and shelter. A bird bath or water hole with fresh water could be a welcome sight for migratory birds. Place the bath in an open area, where birds will be able to see any approaching predators. Planting trees and other plants in your yard (especially \"native\" plants that are adapted to grow in your area and provide seeds and fruits that birds are used to eating) will also attract a variety of feathered visitors."
explanation[5]="Birds that fly long distances have an \"internal clock\" that tells them when it\'s time to prepare for migration and be on their way. Scientists think that cues from the environment (like changes in weather, the amount of sunlight, or Earth\'s magnetic field) cause natural chemicals to be produced in birds\' bodies. This lets birds know when to prepare for migration and where to fly.  Birds that migrate short distances learn their migration routes and breeding areas from older birds, usually their family members. But most long-distance migratory birds are \"genetically programmed,\" meaning they trust their instinct, to fly in a certain direction and for an exact distance."