1) what is pressure a) the physical force exerted on an object. b) the physical area exerted on an object 2) 1 newton per metre square is also called a) 1 centimere b) 1 metre c) 1 pascal 3) pressure equals to a) force times area b) force over area c) force times pressure 4) small force force over a big area produces a) small pressure b) big pressure c) medium pressure 5) a big force over small area produces a) big pressure b) small pressure c) medium pressure 6) reducing the area can be useful if you need a) large pressure b) small pressure 7) you can measure liquid pressure with a) a pressure liquid b) are guage pressu 8) definition of density a) the measurement of how tightly a material is packed together. b) the measure of rough a material is 9) definition of force a) the mass or weight of an object b) The push or pull on an object with mass causes it to change its velocity. 10) density equals a) mass times volume b) density over mass c) mass over volume 11) you measure mass using a) density b) balance c) weight 12) you can measure the volume of the liquid using a) conicil flask b) measuring square c) measuring cylinder 13) what is the density of alaminuim a) 2.6 b) 3.5 c) 10.6 14) what is the denisty of ice a) 2.5 b) 0.9 c) 1.9 15) what is the density of magnesium a) 1.7 b) 3.6 c) 5.5 16) what is the density of water a) 1.00 b) 0.20 c) 0.7 17) diffusion happens faster at a) hight tempreture b) low tempreture 18) the definition of liquid pressure a) the decrease in pressure at increasing depths in a liquid. b) the increase in pressure at increasing depths in a liquid. 19) the definition of compressed a) squashed into a smaller space b) describes something that can not be squashed 20) hydraulic machines uses a) gases b) solids c) liquids 21) hydraulic machines make forces a) smaller b) bigger 22) if you compress a gas into a smaller volume a) the pressure will be bigger b) the pressure will be smaller 23) the density of the air a) 0.001 b) 0.2 c) 0.01 24) the density of gold is a) 18.1 b) 19.3 c) 14.4 25) if the force is 150 newtons and the area is 25 centimetre square what will be the pressure a) 6 newtons per centimetre square b) 10 newtons per centimetre squared c) 8 newtons per centimetre squared

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