Answer questions like ...

1. What is a strong indicator (strong piece of evidence) that a certain crater on Earth was created by an impact rather than volcanic activity? Keep in mind that impact results in higher temperatures and pressures.
2. The intensity of light coming from a blackbody peak at a wavelength
3. Consider a star with twice the sun's surface area with the same surface temperature as the sun. If the total energy emitted by the sun per second is P watts, what is the total energy emitted by tat star per second?