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22 Cards in this Set
- Front
- Back
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Two types of energy that travel by waves are ______
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sound and light
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Heat traveling through a metal rod when placed over an open flame is heat transfer by ______________.
(convection, radiation or conduction) |
conduction
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If you push an object and it does not move. The pushing force and the force of friction are _________.
(balanced or unbalanced) |
balanced or equal
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When you turn on a lamp, some of the electricity is used to produce light. Where does the rest of the electricity go?
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It is transferred into heat energy.
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Why do you still hear a sound of an instrument even when it has stopped producing sound?
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Sound is reflected off of other objects.
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Which is an example of balanced forces?
a. a car turning a corner b. a car slowing down c. a car traveling at a constant speed |
c. a car traveling at a constant speed
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Which of these is an example of heat being transferred through radiation?
a. boiling water in a pot b. a pot handle getting hot c. a person's face warming in the sun |
c. a person's face warming in the sun
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A toy car is rolling across the floor. Why does the toy car eventually come to a stop?
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The unbalance force of friction.
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Name an advantage of solar power.
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pollution-free process
renewable resource |
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Which color absorbs heat the most?
blue white green black |
black
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A kickball is kicked into the air. When the ball reaches its maximum height all the ________energy is transformed to _____ energy.
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kinetic to potenial
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Which of these activities create greenhouse gases?
burning coal building dams planting crops |
burning coal
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Gravitational, magnetic and electrostatic forces are non-contact forces. They are all forces that ________ at a ___________.
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They are all forces that can act at a distance.
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Hot air rising from an air vent in your home is heat transfer by ________. (conduction, convection or radiation)
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convection
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If a person riding a bike wants to keep a constant speed what is the force that will slow them down?
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friction
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Name the law of conservation of energy.
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Energy cannot be created or destroyed.
Energy can be changed from one form into another. |
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Does sound travel faster in air or water?
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Sound travels faster in water than it does air.
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Which of these forces do not act at a distance or require contact?
magnetic, friction or gravity |
friction
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If a car is traveling in a straight line at a constant speed. Are the forces balanced or unbalanced?
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The forces are balanced because the car is moving at a constant speed.
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Describe the energy transformations that occur when a person runs around a track.
_________ to ___________ to __________to ___________ (heat,sound,chemical,mechanical) |
Chemical energy-mechanical-heat-sound
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Name an advantage of using nuclear power.
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Nuclear power does not release carbon dioxide.
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If a dog tugs on a rope with a force of 7N and second dog tugs on the same rope in the opposite direction with a force of 5N. The bone moves to the right of the original position. Describe the net force acting on the bone.
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The net force is 2N acting from left to right as the bone moves to the right of its original position.
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