In a separate experiment the student used the same objects and tray, but glued a piece of gritty sandpaper to the tray. what
results would be expected?
the items would slide faster at the same heights.
the items would start to slide when the tray is not lifted as high.
the items would not slide at all, no matter how high the tray is raised
the tray would need to be raised higher before the items start to slide

Which occurs when air is compressed? air molecules move slower. air temperature rises and air molecules move faster. air temperature decreases. air temperature decreases and air molecules move faster.

What is the general rule about surface currents? cold water flows along the ocean floor towards the equator. the east coasts of continents have cold surface currents, and the west coasts of continents have warm surface currents. seasonal and constant offshore winds create significant upwelling along the west coasts of south and north america and africa. the west coasts of continents have cold surface currents, and the east coasts of continents have warm surface currents.

Read the article titled "trans-saharan migration routes to north africa and the eu: historical roots and current trends." why do tens of thousands of sub-saharan africans try to cross the mediterranean each year? how are these refugees commonly portrayed? (site 1)