11. Water that evaporates from Earth and is changed to a gas is called
12. A cloud is a collection of
13. The pipe for a well should be
than the lowest level of the water table.
14. The temperature of spring water is usually
15. A reservoir is a
created by a dam.
16. Like oceans, lakes have shorelines that
17. The Yellowstone and Niagara rivers are
rivers.
18. Ponds are similar to lakes but are usually

Calculate the estimated density of each ball. use the formula d = m/v where d is the density, m is the mass, and v is the volume. record your calculations in table a of your student guide. given that the density of water is 1.0 g/cm3, make a prediction about whether each ball will float in water. record your prediction in table a. what is the estimated density of the table tennis ball? record your answer to the nearest hundredth