Heat and Energy Study Guide UPDATED
ACTUAL Exam Questions and CORRECT
Answers
What two factors allow the Earth to receive the right amount of energy of the Sun? - CORRECT
ANSWER - Location in the solar system, tilted axis
Why is the energy from the Sun called radiant energy? - CORRECT ANSWER - It radiates
from its source in the form of rays or waves
The radiant energy from the Sun reaches Earth in the range of ______________ and
______________. - CORRECT ANSWER - Visible light, Infrared radiation (heat)
What layer if the Earth absorbs most of the ultraviolet rays from the Sun?
About how much is absorbed that is released from the Sun? - CORRECT ANSWER - 1.
Stratosphere (upper atmosphere)
2. 1-billionth
How does the increase of temperature change the molecular movement of a substance? -
CORRECT ANSWER - As the temperature increases, molecules move faster
How can you describe heat? - CORRECT ANSWER - The total energy resulting from the
random motion of molecules in a substance
Name the five forms of energy. - CORRECT ANSWER - Light energy, electrical energy,
mechanical energy, thermal energy, and nuclear energy
The ability to do work - CORRECT ANSWER - Energy
, What is thermodynamics? - CORRECT ANSWER - The science of the laws that govern
interactions among heat and other types of energy
Potential Energy - CORRECT ANSWER - stored energy (fuel)
Kinetic Energy - CORRECT ANSWER - energy of movement (human body)
3 ways that radiant energy keeps Earth running - CORRECT ANSWER - Heats Earth's
atmosphere and surface
Drives weather and climate systems
Supplies energy for photosynthesis
Green plants are called __________ - CORRECT ANSWER - producers
Levels in a food chain - CORRECT ANSWER - producers, herbivores, 1st level
carnivores; sometimes 2nd and 3rd level carnivores
How much Energy is transferred in a food chain, and how much is lost. - CORRECT
ANSWER - 10%, 90%
First Law of Thermodynamics - CORRECT ANSWER - Energy can neither be created nor
destroyed, it can only be transformed
Second Law of Thermodynamics - CORRECT ANSWER - No energy transfer is 100%
efficient. Some energy is always released as heat
Fuel - CORRECT ANSWER - A chemical that contains stored (potential) energy
Burning a fuel releases energy to produce _______ and _______. - CORRECT
ANSWER - heat, power
ACTUAL Exam Questions and CORRECT
Answers
What two factors allow the Earth to receive the right amount of energy of the Sun? - CORRECT
ANSWER - Location in the solar system, tilted axis
Why is the energy from the Sun called radiant energy? - CORRECT ANSWER - It radiates
from its source in the form of rays or waves
The radiant energy from the Sun reaches Earth in the range of ______________ and
______________. - CORRECT ANSWER - Visible light, Infrared radiation (heat)
What layer if the Earth absorbs most of the ultraviolet rays from the Sun?
About how much is absorbed that is released from the Sun? - CORRECT ANSWER - 1.
Stratosphere (upper atmosphere)
2. 1-billionth
How does the increase of temperature change the molecular movement of a substance? -
CORRECT ANSWER - As the temperature increases, molecules move faster
How can you describe heat? - CORRECT ANSWER - The total energy resulting from the
random motion of molecules in a substance
Name the five forms of energy. - CORRECT ANSWER - Light energy, electrical energy,
mechanical energy, thermal energy, and nuclear energy
The ability to do work - CORRECT ANSWER - Energy
, What is thermodynamics? - CORRECT ANSWER - The science of the laws that govern
interactions among heat and other types of energy
Potential Energy - CORRECT ANSWER - stored energy (fuel)
Kinetic Energy - CORRECT ANSWER - energy of movement (human body)
3 ways that radiant energy keeps Earth running - CORRECT ANSWER - Heats Earth's
atmosphere and surface
Drives weather and climate systems
Supplies energy for photosynthesis
Green plants are called __________ - CORRECT ANSWER - producers
Levels in a food chain - CORRECT ANSWER - producers, herbivores, 1st level
carnivores; sometimes 2nd and 3rd level carnivores
How much Energy is transferred in a food chain, and how much is lost. - CORRECT
ANSWER - 10%, 90%
First Law of Thermodynamics - CORRECT ANSWER - Energy can neither be created nor
destroyed, it can only be transformed
Second Law of Thermodynamics - CORRECT ANSWER - No energy transfer is 100%
efficient. Some energy is always released as heat
Fuel - CORRECT ANSWER - A chemical that contains stored (potential) energy
Burning a fuel releases energy to produce _______ and _______. - CORRECT
ANSWER - heat, power
