Ablue colored ice cube floating on hot water quickly melts to release its color. the cool, blue water moves downward. this downward movement of cold water in hot water demonstrates convection. in which of the earth's systems is heat distributed by convection? question 1 options: a. the atmosphere b. the earth's mantle c. the oceans d. all of these.

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

Which substance has non polar covalent bonds

In science class richard learns that a substance has a boiling point of 230 fahrenheit his teacher ask him to convert this temperature to degrees celsius what is the boiling point of his substance in degrees celsius