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.