DHS PS CH 4/5 - Work, Energy, & Power (online course)
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | cause change
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| What 2 factors determine how much kinetic energy an object has? | show 🗑
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| show | potential or GPE
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| show | kinetic
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| show | chemical potential energy
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| show | weight (mass x gravity) of the object and height above the ground
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| Energy in the form of motion is what kind of energy? | show 🗑
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| show | 1/2mv2
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| show | Joule
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| show | J
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| Energy stored in a motionless object | show 🗑
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| Energy stored by things that stretch or compress is what kind of energy? | show 🗑
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| Energy stored in chemical bonds between atoms is what kind of energy? | show 🗑
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| Energy stored by things that are above Earth's surface is what kind of energy? | show 🗑
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| What is the abbreviation for gravitational potential energy? | show 🗑
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| The amount of GPE an object has depends on what 3 things? | show 🗑
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| show | mgh
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| show | chemical potential energy
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| As energy transformation occur within a system, the total energy of the system must ________? | show 🗑
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| During energy transformations, energy is never? | show 🗑
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| show | when it reaches its highest point
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| show | energy cannot be created or destroyed
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| In what units are food energy measured in? | show 🗑
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| show | they convert mass into energy
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| By what process does the Sun produce enough energy to warm Earth? | show 🗑
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| show | No
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| show | Yes
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| Is electrical a form of energy? | show 🗑
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| Is chemical a form of energy? | show 🗑
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| show | because of friction
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| show | energy conversions
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| show | chemical potential energy
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| show | mechanical energy
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| show | Law of Conservation of Energy
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| As a swing moves back and forth, its energy continually converts from kinetic to potential and back is an example of? | show 🗑
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| Friction converts some of the mechanical energy into? | show 🗑
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| show | nuclear fusion
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| show | nuclear fission
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| show | chemical potential energy
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| What is used to measure how much energy you get from various foods? | show 🗑
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| Is energy lost when a car burns gasoline? | show 🗑
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| show | work
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| Picking up a stack of dishes from the table is an example of? | show 🗑
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| show | transer of energy
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| What is the rate at which work is done? | show 🗑
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| show | watts
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| show | one joule per second
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| show | work
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| show | move
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| show | the same direction
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| show | transferred
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| show | force
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| When calculating work, work equal force (in newtons) times ______. | show 🗑
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| The amount of work done in a certain amount of time is called? | show 🗑
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| show | power
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| To calculate power, power equal? | show 🗑
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| Power is measured in? | show 🗑
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| show | Energy is transferred from an object doing work to an object being worked on
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| show | velocity
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| Increasing the speed of an object _____ its potential energy. | show 🗑
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| The SI unit for energy is the? | show 🗑
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| show | No
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| Does a radio make use of electrical energy? | show 🗑
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| Does a toaster make use of electrical energy? | show 🗑
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| Does a digital camera make use of electrical energy? | show 🗑
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| show | kinetic energy
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| show | energy
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| According to the law of conservation of energy, the total amount of energy in the universe ______? | show 🗑
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| The transfer of energy to a body by the application of force that caused the body to move in the direction of the force is called? | show 🗑
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| show | power
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| At the top of its arc, a thrown ball has ___ potential energy? | show 🗑
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| show | potential, kinetic
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| As a fly ball is hit in the air, ________ energy is converted to ________ energy. | show 🗑
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| show | some of the mechanical energy is converted to nonmechanical energy
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| The law of conservation of energy states that energy? | show 🗑
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| show | friction
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| What are the units of power? | show 🗑
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| show | when it leaves the bat
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| When work is done, there is always a? | show 🗑
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| If a car quadruples its velocity, how does it affect its KE? | show 🗑
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| If a car doubles its velocity, how does it affect its KE? | show 🗑
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| If a car triples its velocity, how does it affect its KE? | show 🗑
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| show | it is doubled
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| How doe the rate at which you climbed the stairs affect your work? | show 🗑
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| show | the faster work is completed, the more power is exerted.
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| Where is the kinetic energy the greatest at on a roller coaster | show 🗑
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| show | No, not unless extra energy is added to the system (like the Maverick)
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| Carrying a pumpkin, work or nonwork? | show 🗑
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| Setting a plate down, work or nonwork? | show 🗑
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| show | work (force and direction are same)
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| show | work (force and direction are same)
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| show | nonwork (puck no longer in contact with stick)
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| What is the formula to determine the Power rating of an electrical device? | show 🗑
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| Who is more powerful? Sally does 20 J in 10 s while Jenny does 10 J in 10 s. | show 🗑
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To hide a column, click on the column name.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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