ARE YOU ENERGIZED?
ENERGY TRANSFORMATIONS
HOW HIGH IS YOUR TEMPERATURE
HEATING THINGS UP
HOW SPECIFIC IS HEAT?
100
All objects have energy. In physical science, energy can be defined as this.
the ability to do work
100
No matter how energy is transformed, energy itself is not created or destroyed. This principle forms the basis of this scientific law.
What is .... the LAW OF CONSERVATION of ENERGY
100
This must happen to the particles in a substance to change its temperature.
What is... GAIN or LOSE ENERGY
100
Heat ALWAYS flows in this direction between two substances of different temperatures.
What is... from warmer to cooler
100
A substance that heats up and cools down quickly can be described as having this quantity of specific heat.
What is... LOW
200
The amount of kinetic energy (KE) an object has is determined by these two properties. A). mass and temperature C). mass and speed B). height above Earth's surface D). weight and speed
What is... C). MASS AND SPEED
200
A swinging pendulum eventually stops because air resistance acting on the pendulum converts some of the kinetic energy into this wasteful form of energy.
What is... THERMAL ENERGY
200
The amount of a substance is NOT affected by this property of the substance. A). the number of its particles B). the temperature of the substance. C). the mass of the substance. D). the volume of the substance.
What is... B). THE TEMPERATURE OF THE SUBSTANCE
200
The metal handle of a pot cooking on a stove soon becomes too hot to touch because of this method of heat transfer.
What is... CONDUCTION
200
This property of matter is defined as defined as the amount of heat energy required to raise the temperature of 1 kilogram of a substance by 1°C.
What is... specific heat?
300
A rock hanging on the cliff has a form of stored energy called gravitational potential energy. Gravitational potential energy depends on these two factors.
what is... WEIGHT OF AN OBJECT AND ITS HEIGHT ABOVE EARTH"S SURFACE
300
This situation describes a conversion from" kinetic" energy into "potential" energy. A). An orange falls from a tree. B). A car rolls across the floor. C). A swan moves across the water. D). An archer pulls back a bowstring.
What is... D). An archer pulls back a bowstring.
300
Compared to the Atlantic ocean, a hot cup of tea has ______________ thermal energy and a _______________ temperature.
What is .. MORE thermal energy and a LOWER temperature
300
The hot air you see rising from the pavement on a hot summer day is an example this method of heat transfer.
What is... CONVECTION.
300
How much energy is required to heat 35.0 kg of gold from 10 degrees Celsius to 50 degrees Celsius? (Heat = specific heat x mass x change in temperature)
What is ... 180.6 J (129J/kg X degrees Celsius) (0.035kg)(40 degrees Celsius)
400
Two cars of equal mass are driving along a road. One car is traveling at a speed of 30 km/h. The second is traveling at 120 km/h. Which of the following is true? A). They both have the same kinetic energy. B). The KE of the first car is greater than the second car. C). The KE of the second car is greater than the first car. D). No conclusion can be determined about either car's KE.
What is... C). THE KE ENERGY OF THE SECOND CAR IS GREATER THAN THE FIRST CAR
400
A ball is tossed from a building. At "this point in its fall" the KE of the ball is greatest and its potential energy is lowest.
just as it strikes the ground
400
Normal body temperature is 68 degrees Fahrenheit which is equavilant to this many degrees in Celsius.
What is... 37 degrees Celsius.
400
The wood surrounding a window glass feels warmer than the glass because... A). Wood is a better insulator than glass B). Glass is a better insulator than wood C). Wood is a better conductor than glass All warm bodies emit this form of heat energy. You can feel its warming effect from sitting by a fire, and toaster ovens use it to heat food.
What is...A). Wood is a better insulator than glass
400
This is the specific heat of a material that gains 600 joules of energy when a 0.25kg object increases its temperature by 3 degrees Celsius.
What is ... 800J/kg x degrees Celsius specific heat = heat / (mass x change in temperature) c = 600J / (0.25kg) (3 degrees Celsius)
500
A rock sitting at the edge of a cliff has this "percentage" of potential energy because of its position.
What is... 100%
500
If the total energy of a pendulum is 200 joules at the highest point of its swing, its kinetic energy will be this amount of joules at the lowest point of its swing.
What is... 200 joules.
500
The weather forecast calls for a temperature of 27 degrees Celsius which corresponds to this many Kelvins.
What is... 300 K ( K = 27 degrees Celsius + 273 K)
500
All warm bodies emit this form of heat energy. You can feel its warming effect from sitting by a fire, and toaster ovens use it to heat food.
What is ... INFRARED RADIATION
500
The formula for finding heat energy is simply the product of these three factors.
What is... SPECIFIC HEAT, MASS, and CHANGE IN TEMPERATURE
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