11,13,14,15,16,17 Quiz Review PHY1020C
If you heat an ice bucket of water for several hours until only a small amount of ice remains, the temperature of water will be
quite close to 0° C.
The planet Earth loses heat mainly by
radiation
If 50 Newtons of force is added over a liquid with 1 m2 of surface area, how many Newtons of weight can be lifted by a hydraulic piston with a surface area of .01 m2?
.5 N
What is the approximate mass of a 1-square-centimeter column of air that extends from sea level to the top of the atmosphere?
1 kilogram
A one-ton blimp hovers in the air. The buoyant force acting on it is
1 ton
How many joules does it takes to vaporize 1 gram of water?
2255J.
How many different elements are in a water molecule?
Two
Near the top of a mountain, water in an open pot boils at
a lower temperature than at sea level.
Bimetals bend in opposite directions during heating and cooling because
a metal that expands more will also contract more.
The smallest particle of those listed below is a proton. a quark. a molecule. a neutron. an atom.
a quark.
Warm air rises because faster-moving molecules tend to move to regions of less
density and less pressure.
As atmospheric pressure is increased, the boiling temperature of a liquid
goes up
The moderate temperatures of islands throughout the world has much to do with water's
high specific heat
About what percentage of the molecules that make up the atmosphere are below an aircraft that flies at an altitude of 6 kilometers?
more than 50%
The most common state of matter in the universe is
plasma.
Ice tends to form first at the
surface of bodies of water.
Heat energy travels from an object with a high
temperature to an object with a lower temperature.
Both black and white road surfaces absorb sunlight. At the end of a sunny day the warmer road surface will be
the black surface
The reason a life jacket helps you float is
the density of both you and the jacket together is less than your density alone.
What makes an element unique, different from every other element?
the number of protons
Which of these atoms has the most mass?
uranium
The food in a refrigerator is cooled by
vaporization of the refrigerating fluid.
The pressure at the deepest point of a lake 10 m deep is about
100,000 N/m2.
The mass of a cubic meter of water is
1000 kg.
If you add heat for 35 minutes to a pan with 2 kgs of 100°C water in it the temperature of the remaining water will be
100°C.
Before ice can form on a lake, all the water in the lake must be cooled to
4 degrees C.
Which has the most pressure at the bottom? A tube of water 20 m deep with a diameter of 1 cm. A 12 m deep lake with a diameter of 10 m A 15 m deep well with a diameter of 1 m. A 5 m deep section of the ocean with a diameter of 1 km.
A tube of water 20 m deep with a diameter of 1 cm.
Which of these statements is true? A molecule is the smallest particle that exists. Molecules form atoms that in turn determine chemical properties of a substance Chemical elements are made up of about 100 distinct molecules. Atoms are the smallest subdivision of matter that retains the chemical properties of a substance.
Atoms are the smallest subdivision of matter that retains the chemical properties of a substance.
Steam burns are more damaging than burns caused by boiling water because steam has more energy per kilogram than boiling water. Both Choices are incorrect. gives up change of phase energy when it condenses. Both Choices are correct.
Both Choices are correct.
Which of the following is NOT a mixture? air granite cake None. All of these choices are mixtures. beach sand
None. All of these choices are mixtures.
The technology for orbiting solar power plants
already exists
In drinking soda or water through a straw, we make use of
atmospheric pressure.
A bubble of air released from the bottom of a lake
becomes larger as it rises
The pressure in a liquid depends on liquid
both density and depth
Heat energy is measured in units of
both joules and calories.
Which of these glow with electromagnetic waves? neither the Sun or the Earth only the Sun both the Sun and the Earth only the Earth
both the Sun and the Earth
Water pressure is greatest against the
bottom of a submerged object.
The attraction between molecules of the same kind is called
cohesion.
A force that determines the chemical properties of an atom is the
electrical force.
If water flows into a smaller diameter pipe and speeds up, the bubbles in the water
expand
When warm air rises, it
expands and cools.
Compared to a glass of ice water with ice in it, on a warm day a glass of pure ice-cold water without ice will warm up
faster.
Energy transfer by convection is primarily restricted to
fluids
Food in a pressure cooker is cooked faster because of the
higher temperatures reached in a sealed container.
An object will normally be a net radiator of energy when its temperature is
higher than its surroundings.
When objects are heated, they tend to expand because
hotter objects have more energetic molecules that move father apart
Your feet feel warmer on a rug than on a tile floor because a rug
is a better insulator than tile
Ice has a lower density than water because ice
is made of open-structured, hexagonal crystals.
When the air pressure is lowered,
it takes less heat to boil water.
If we slowly pump out all the air over a bowl of water until it is in a vacuum,
it will boil, then freeze.
As a helium-filled balloon rises in the air, it becomes
less dense
Metals are both good heat conductors and good electrical conductors because of the
looseness of outer electrons in metal atoms.
A substance that heats up relatively quickly has a
low specific heat
Compared to an empty ship, the same ship loaded with Styrofoam will float
lower in the water.
The air in this room has
mass, weight, and energy.
Adding pressure to ice causes ice to
melt
Absolute zero is where atoms in a substance have
minimum kinetic energy.
When a gas is changed to a liquid state, the gas
releases energy
If you are standing in a cave on a cliff, and the air outside the cave is moving much faster than the air inside the cave,
the pressure difference wants to suck you out of the cave.
The higher the temperature of an object
the shorter the wavelengths it radiates.
Atoms heavier than helium were mostly made by made by
thermonuclear fusion.
In our part of the universe, antimatter is plentiful. non-existent. very long-lived. very short-lived.
very short-lived.
A completely submerged object always displaces its own
volume of fluid
When water in the vapor phase condenses to liquid in the air, the surrounding air
warms.
A balloon is buoyed up with a force equal to the
weight of air it displaces.