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WorksheetsTOPIC 5 & 6_PE, KE, ME
Total questions: 30
Worksheet time: 24mins
Energy due to motion is ____________ energy. And energy due to its position is ____________energy.
potential, kinetic
mechanical, potential
kinetic, potential
mechanical, kinetic
At which point of the roller coaster journey is kinetic and potential energy greatest respectively?
W, X
X, W
Y, X
Z, Y
What position of the roller coaster has the least amount of potential and kinetic energy, respectively?
W, X
X, W
Y, X
Z, Y
The rock in the picture is pushed over the edge and it begins to fall. Which type of energy conversion is taking place?
mechanical to heat
sound to mechanical
potential to kinetic
kinetic to potential
When a roller coaster cart falls towards the ground, what happens to its potential energy and kinetic energy?
it loses potential energy and gains kinetic energy
it gains potential energy and loses kinetic energy
Its potential and kinetic enery remains the same
Its potential and kinetic energy becomes zero
Based on the formula for potential energy, what 2 variables influence PE the most? PE = mgh
mass only
height only
mass, height, and gravitational acceleration of the earth
Based on the formula for kinetic energy, what variables influence KE the most? KE = 1/2 mv2
mass and velocity
mass only
velocity only
mass, height, and velocity
Which among the following has a greater potential energy?
a 2kg ball on the floor
a 5g feather on the top of a 3m roof
a 1kg drone hovering 200m above the ground
a 2000kg truck parking at the roadside
How are different forms of energy related?
they can all be transformed into other forms of energy
none of them can be transformed into other forms of energy
they can be created
they can be destroyed
As an object falls its __________ energy decreases and its kinetic energy increases
potential
chemical
thermal
electric
Which law is this?
When you drop a basketball it does not bounce back all the way. This is because some of the mechanical energy is 'lost' when it transforms into which of the following ?
Sound
Chemical
Radiant
Thermal
When gasoline burns to move a car, which of the following transformations take place?
Chemical to Thermal
Chemical to Mechanical
Potential to Kinetic
Mechanical to sound
Thermal to chemical
A solar power plant converts _____________ to ____________.
Electrical energy to solar energy
radiant energy to electrical energy
chemical energy to electrical energy
mechanical energy to thermal energy
When a car burns gasoline it creates hot air to move the pistons in the engine, which causes the car to move. What energy transformation occur from the fuel to the movement of a car?
thermal energy to mechanical energy
thermal energy to chemical energy to mechanical energy
chemical energy to thermal energy to mechanical energy
chemical energy to electrical energy
This drawing illustrates which of the following?
Conservation of Mechanical Energy
Conservation of Mass
Conservation of Energy
Conservation of Matter
What enegy source is most used all over the world?
fossil fuels
hydropower plant
geothermal power plant
nuclear power plant
What is the most used energy source in Cebu?
fossil fuels
coal
natural gas
oil
Which of the following are the major energy consuming sectors of our society?
commercial sector
industrial sector
agricultural sector
transporattion sector
residential sector
Which of the following is are true about the use of steam engine before and after industrial revolution?
before industrial revolution, steam engines are used to remove water from flooded mines
after the industrial revolution, steam engines are used to burn fossil fuels to generate electricity
steam engines are used to convert chemical energy to mechanical energy to electrical energy
steam engines are used to convert chemical energy to heat energy to kinetic energy
Geothermal power plants use steam to produce electricity. The steam comes from reservoirs of hot water found a few miles or more below the earth's surface. The steam rotates a turbine that activates a generator, which produces electricity. What energy transformation in geothermal power plant?
HEAT to MECHANICAL to ELECTRICAL
HEAT to ELECTRICAL to MECHANICAL
HEAT to ELECTRICAL to KINETIC
HEAT to ELECTRICAL to CHEMICAL
A water bottle is knocked off a desk.
When does the WATER have the MOST KE? MOST PE?
At the top of the fall.
At the bottom of the fall.
In the middle of the fall.
At the bottom of the fall.
At the bottom of the fall.
At the top of the fall.
Why Is a dam thicker at the bottom than at the top?
becuase the lower portion of the dam has greater water pressure exerted upon it
becuase the lower portion of the dam has lesser water pressure exerted upon it
becuase the lower portion of the dam has greater total mechanical energy
becuase the lower portion of the dam has lesser total mechanical energy
