On a roller coaster, this is where potential energy is at its greatest.
What is at the beginning?
100
This involves the conversion of chemical energy into light energy?
a. incandescent bulb b. fluorescent bulb
c. halogen bulb d. burning match
What is
d. burning match
100
Gold has a specific heat of 0.129 J/(g×°C). How
many joules of heat energy are required to raise
the temperature of 15 grams of gold from 22 °C to 85
°C?
What is 121.91 J
100
This is how a lava lamp works.
a. Convection currents cause the liquids to rise when they are heated and sink when they are cooled.
b. Conduction from the lamp base causes the liquids to gain thermal energy and boil rapidly.
c. Convection from the lamp base causes the entire glass container to have the same temperature.
d. Radiation of light causes the entire glass container to have the same temperature.
What is
a. Convection currents cause the liquids to rise when they are heated and sink when they are cooled.
100
Debbie is preparing a large metal pot of vegetables for supper. The pot has two metal handles. Debbie is about to lift the pot with both of her hands when she remembers to use pot holders to protect her hands. She protecting herself from.....
What is heat transfer by conduction?
200
On a roller coaster, this is where kinetic energy is at its greatest.
What is at the bottom of the first hill?
200
This is what do a toaster, a hair dryer, and an iron have in common
What is they all convert electric energy to thermal energy?
200
45 grams of an unknown substance undergoes a
temperature increase of 38 °C after absorbing
4172.4 Joules. What is the specific heat of the
substance?
What is 2.44 J/degrees Celsius?
200
In this phase, the particles in a substance have the greatest freedom of motion? (other than plasma)
What is a gas?
200
An unknown substance with a mass of 100 grams
absorbs 1000 J while undergoing a temperature increase
of 15 °C. Is this an endothermic or exothermic reaction?
What is endothermic?
300
A 3.5g soccer ball is rolling at a velocity of 12m/s. How much kinetic energy does it have?
What is 21 J?
300
This is the type of energy plants use to make food?
What is electromagnetic, light, radiant?
300
If you have 1-gram samples of each of the following substance! Which will heat the slowest?
Water (l) 4.18 j/g . C
Ethanol 2.44 j/g . C
Water (S) 2.06 j/g . C
Aluminum .897 j/g . C
What is liquid water?
300
This is what happens to the temperature of water as it is changing from a solid to a liquid or a liquid or a solid.
What is the temperature remains the same until the phase change is finished?
300
This is the ability to do work or cause a change.
What is energy?
400
This is the relationship between kinetic and potential energy in a system.
What is they are inverse of each other. As the kinetic energy increases, the potential energy decreases, etc.?
400
A flashlight uses three different forms of energy. List the energy changes in the correct order.
What is chemical-electric-electromagnetic (light)
400
Ebony decides to use her new aluminum pan to scramble eggs. She wants to determine how much heat energy will be needed to heat her aluminum pan from 20°C to 100°C. Ashley, obtains the specific heat of aluminum from the reference table in their Physical Science book. It lists the specific heat of aluminum as 0.90J/g . oC. The pan has a mass of 100g
What is 7,200 J?
400
Heat transfer always results in a change of temperature when it flows….
a. between equally cold objects.
b. between equally warm objects. ,
c. from a colder object to a warmer object.
d. from a warmer object to a colder object.
What is
d. from a warmer object to a colder object.
400
Why does a person in a swing have potential energy when he/she reaches the highest point before changing direction?
What is because the swing stopped moving?
500
What is the potential energy of an object 30 meters in the air with a mass of 40 kg?
What is 11,760 J?
500
What energy transformation occurs when gasoline burns in an automobile? (3)
What is chemical-mechanical-thermal?
500
This is How much heat is needed to decrease the temperature of 120 g of Lead from 100 °C to 0°C?
Water (l) 4.18 j/g . C
Aluminum .897 j/g . C
Lead .129 j/g . C
a. 10,764.0 J b. -10,764.0 J
c. 12,08.97 J d. – 1, 548 J
What is
d. -1,548 J
500
This is what happens to the molecules in a material as thermal energy is added.
What is they move faster and further apart?
500
Graphite has a specific heat of 0.709 J/(g×°C). If a
25 gram piece of graphite is cooled from 35 °C to 18 °C, is this an endothermic or exothermic reaction?