FC: The Water Cycle/Life Cycle of the Green Tree Frog | Sy Rodriguez-Kelley
1: The Water Cycle
3: You may think that every drop of rain that falls from the sky, or each glass of water that you drink, is brand new, but it has always been here and is a part of The Water Cycle. The water cycle describes how water is not only always changing forms (liquid water, ice, and vapor (gas)), but also moving around all over the world (above, on, and underground). This process is always happening everywhere, be it in your body or on your lawn or in the clouds or in the swimming pool. Life on, in, and above the Earth depends on the water cycle.
5: The heat of the sun provides energy to make the water cycle work. The energy the sun provides is heat.
7: The sun evaporates water from the oceans into water vapor. This invisible vapor rises into the atmosphere, where the air is colder. The water vapor condenses into clouds. Colder air does not hold water vapor as a gas as easily as warmer air, so as the warmer air rises up into the atmosphere, it gets cooled and the water vapor in it starts to condense back out into tiny liquid cloud particles.
9: Water drops form in clouds, which then fall to Earth as precipitation (rain and snow). As water vapor condenses into clouds, the tiny cloud droplets can combine to form larger cloud drops, which will eventually become heavy enough to come down as rain, snow, and other precipitation. In cold climates, precipitation builds up as snow, ice, and glaciers.
11: Snow can melt, becoming runoff, which flows into rivers, the oceans, and into the ground. Some ice evaporates directly into the air, skipping the melting phase (sublimation).
13: Rainfall on land flows downhill as runoff, providing water to lakes, rivers, and the oceans. Some rain soaks into the ground, as infiltration, and, if deep enough, recharges groundwater. Water from lakes and rivers can seep into the ground. Water moves underground because of gravity and pressure. Groundwater close to the land surface is taken up by plants. Some groundwater seeps into rivers and lakes, and can flow to the surface as springs. Plants take up groundwater and evaporate, it from their leaves. Groundwater flows into the oceans, keeping the water cycle going.
14: All living things on earth require water. Humans, plants, and animals, all need water to survive. Let's learn about the life cycle of frogs...
16: Life Cycle of the Green Tree Frog
17: A clutch of 15-75 eggs green with a clear gelatinous layer surrounding them.
18: After 5-11 days, the eggs hatch into tadpoles.
19: The tadpole develops the front and hind legs (40-60 day tadpole stage).
20: The frog is fully developed and terrestrial, with the tail being absorbed into its’ body.
21: After three weeks, the frog is fully developed and now has red irises and pupils characteristic elliptic adult tree frog.