Quiz
CH.13
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Fragen in diesem Quiz (26)
1Which will remain the same for two identical books, one lying flat and the other standing on an end?
- Aweight
- Bpressure
- Cboth of these
- Dneither of these
2When you stand with only one of your feet on a weighing scale, the scale reading is
- Athe same as with both feet.
- Bhalf.
- Cdoubled.
- Dnone of the above.
3Jane lies on a bed of sharp nails without harm because
- Amany of the nails don't make contact with her body.
- Bshe exercises mind over matter.
- Cher weight is distributed over hundreds of nails.
- Dnone of the above
4A hospital patient confined to bed will be less likely to develop bed sores with a
- Awater bed.
- Bsoft mattress.
- Cfirm mattress.
- Dnone of these will help.
5While standing, your blood pressure is normally greatest in your
- Aheart.
- Bfeet.
- Csame in each
- Dhead.
6 Water pressure on a submerged object is greatest against its
- Atop.
- Bsides.
- Cbottom.
- Dsame against all surfaces
- Enone of the above
7A dam is thicker at the bottom than at the top mainly because
- Asurface tension exists only on the surface of liquids.
- Bwater is denser at deeper levels.
- Cit looks better.
- Dwater pressure increases with depth.
- Enone of the above
8Buoyant force acts upward on a submerged object because
- Ait acts in a direction to oppose gravity.
- Bpressure against its bottom is greater than pressure against its top.
- Cthe weight of fluid displaced reacts with an upward force.
- Dnone of the above
9When holes are drilled through the wall of a water tower, water will spurt out with the greatest speed from the hole closest to
- Athe top of the tower.
- Bthe bottom of the tower.
- Cthe middle of the tower.
- Dall the same
10The buoyant force on an object is least when the object is
- Asubmerged near the surface.
- Bsubmerged near the bottom.
- Cpartly submerged.
- Dnone of the above
11The buoyant force acting on a 10 N boat floating in the ocean is
- A10 N
- Bmore than 10 N
- Cdepends on density of sea water
- Dless than 10 N
12When a boat sails from fresh water to salt water, the boat will float
- Aat the same water level.
- Blower in the water.
- Chigher in the water.
13What is the weight of water displaced by a 100-ton floating ship?
- Amore than 100 tons
- B100 cubic meters
- Cdepends on the ship's shape
- Dless than 100 tons
- E100 tons
14 A scale from which a rock is suspended reads 5 N when the rock is out of water and 3 N when the rock is submerged. Buoyant force on the rock is
- A3 N.
- B5 N.
- C2 N.
- D4 N.
15A scale from which a rock is suspended reads 5 N when the rock is out of water and 3 N when the rock is submerged. The density of the rock is
- Athe same as the density of water.
- Bgreater than the density of water.
- Csmaller than the density of water.
- Dcan not be determined since there is not enough information.
- Enone of the above
16Pumice is a volcanic rock that floats, which means its density is
- Aequal to the density of water.
- Bless than the density of water.
- Cmore than the density of water.
- Dneed more information.
17A fish normally displaces its own
- Aweight of water.
- Bvolume of water.
- Cboth of these
- Dneither of these
18Lobsters live on the bottom of the ocean, which means their density is
- Aequal to the density of sea water.
- Bless than the density of sea water.
- Cgreater than the density of sea water.
19The density of a submerged submarine at rest (in the middle of water not all the way down to the bottom of the ocean) is about the same as the density of
- Airon.
- Ba floating submarine.
- Cwater.
- Dnone of the above
20An egg rests at the bottom of a bowl filled with water. When salt is slowly added to the water the egg rises and floats, from which we conclude
- Asalt water is denser than an egg.
- Bsalt water is denser than fresh water.
- Cboth of these
- Dneither of these
21When you float in fresh water, the buoyant force that acts on you is equal to your weight. When you float higher in the denser water of the Dead Sea, the buoyant force that acts on you is
- Aequal to your weight.
- Bless than your weight.
- Cgreater than your weight.
22A person floats higher in the dense water of the Dead Sea because
- Aof a greater buoyant force.
- Bless volume of water is displaced.
- Cmore volume of water is displaced.
23When an ice cube in a glass of water melts, the water level
- Aremains the same.
- Brises.
- Cfalls.
24A floating ice cube contains small pieces of iron. The water level after melting will
- Afall.
- Brise.
- Cremain unchanged.
25When you observe the applications of pistons in hydraulic lifting operations you're seeing
- APascal's principle in action.
- Bhow energy can be increased.
- Cboth of these.
- Dneither of these.
26To multiply an applied force while using a simple hydraulic lift, your force should be applied to the
- Alarge-diameter piston.
- Brelative piston sizes don't matter.
- Csmall-diameter piston.
Informationen
- Beschreibung
- Liquids, Buoyancy, Archimede's principle, Floating, Pascal's Principle, & Capillarity.
- Autor
- Winston Schultz
- Sprache
- English
- Aufrufe
- 132
- Schlagwörter
- Bewertung
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