What is it called when matter changes directly from a solid to a gas?

Current evidence suggests that many massive jovian planets orbit at very close orbital distances to their stars. How do we think these planets ended up on these close orbits?

List the outer planets from smallest to largest

Gerald is fishing. He uses a bobber that floats on the surface to show him if the line is being moved, and a lure that sits below the surface to attract fish. Gerald is fishing.

What is the half life of u-235 according to the graph

Missing one night of sleep to go to a concert several towns over makes one an insomniac true or flase

For states with larger values of n that admit a d subshell, the d subshell is at even higher energy than the p subshell. In fact, its energy is higher than that of the s subshell for the n+1 state.

How does respiration differ from breathing

Before radiant energy can be converted to thermal energy, it must be changed to what

My science fair project is: Texting Versus Talking - Effects of Cell Phones on Reaction time. What should I research?

How does the brightness of a bulb tell you about the energy of electrons passing through it?