Ablock of wood is at rest on a wooden ramp. when wheels are attached to the block of wood, it moves down the ramp. explain each situation in terms of friction.

Esign techniques and materials that reduce the negative environmental impact of a structure are referred to as

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

What three things determine the shape and size of a puddle when water is poured out onto a surface