A disadvantage of solar energy is A. that the clouds can block the sunlight
B. it is not available at night
C. that the clouds can block the sunlight and it is not available at night
D. the sun is to hot the absorbed in solar panels

In what layer of the sun is energy transfers between atoms

The body of water found at number 4 on the map above is the

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.