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- @Pressure is measured in:
- Pa
- N
- m/s
-
- @Which one of the following does the pressure exerted by an object depend on
- Force and area
- Mass
- Gravity
-
- @Pressure is measured in Pascals (Pa), but what else could it be measured in
- N/m²
- N/kg
- kg/m
-
- @In a liquid, pressure:
- Increases with depth
- Decreases with depth
- Increases up to a point and then decreases
-
- @In a liquid pressure does NOT depend on which one of the following?
- Area
- Density of liquid
- Gravity
-
- @A submarine is deep underwater. A pressure p1 pushes on the sides and a pressure p2 pushes from below. Which one of these statements is correct?
- p1 = p2
- p1 is greater than p2
- p2 is greater then p1
-
- @A container full of water has a small hole at the bottom through which water escapes. As the water level (H) falls then the distance (L):
- #pre4
- Gets less
- Stays the same
- Becomes larger
-
- @The diagram shows a container of water with a hole. The distance the water is going is L. If you wanted L to remain constant you would have to:
- #pre4
- Keep the water level in the container the same
- Make another hole in the container
- Completely fill the container
-
- @The diagram shows a piston in a container. If the substance inside the container was a liquid then the piston:
- #pre1
- Would not move whatever force was applied
- Could move down easily
- Would move easily at first, but then become difficult
-
- @Shoes with stiletto heels are more likely to damage a wooden floor because:
- the heel point exerts a high pressureĀ
- frictional forces are increased
- the person walking is not stable and wobbles slightly
-
- @Camels have large flat feet. Why?
- So they do not sink into the sand
- To improve heat loss
- To increase friction and get a better grip
-
- @A dam holds back water. How does the thickness of the dam vary from top to bottom?
- It gets thicker towards the base
- Its wider at the top than at the base
- It must have a constant thickness, otherwise it wouldn't be stable
-
- @For aircraft, at high altitudes, which one of the following is correct?
- The pressure inside the cabin is greater than that outside
- The pressures inside and out must be exactly the same
- There is greater pressure outside the aircraft than inside
-
- @Why do astronauts wear spacesuits on the Moon?
- Because there is no outside air pressure
- Because they need oxygen
- To protect them from dangerous solar radiation
-
- @The greatest pressure is exerted on the floor when:
- standing on tiptoe, on only one foot
- standing with both feet flat on the floor
- standing on only one foot, flat on the floor
-