A student decides to go to the kitchen for a late night snack. When opening the door, she notices the light from inside seem to cover more floor than the open door. Which wave behavior have they experienced?
a) Diffraction
b) Refraction
c) Reflection
d) Interference

The slope of a good speed time indicates ? a. velocity b. acceleration c. direction d. speed

What statements accurately describe atoms

Why is rain likely when warm, moisture-laden air meets cold air? a) the lighter warm air will rise and cool down, causing condensation and rain. b) the cold air moves faster and pushes the warm air away, causing condensation and rain. c) the moisture in the warm air condenses on contact with the cold air, causing rain to fall. d) the cold air mixes with the warm air, reducing its temperature causing moisture to condense.