One idea for avoiding a catastrophic collision of space debris with Earth is the use of missile-like projectiles to knock the object off course. How can scientists be sure to create an impact with enough kinetic energy to change a meteoroid’s course? What factors should they consider?

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Matter that emits no light at any wavelength is called

Which of the following list the divisions of the geologic time scale in order from longest to shortest