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6 Weeks Test
Energy
11
Science
7th Grade
12/17/2007

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Cards

Term
What is Newton's first law of motion?
Definition
An object will not change its motion unless a force acts on it.
Term
Whats Newton's second law of motion?
Definition
A netforce acting on an object changes the velocity of the object and causes it to acelarate.
Term
Whats Newton's third law of motion?
Definition
When an object exerts a force on a second object the second object exerts an equal force in the opposite direction on the first object.
Term
What is the formula for speed?
Definition

S=Total distance traveled

Travel Time

 

Term
What is energy?
Definition
The abilty to do work or cause change.
Term

What is poential energy?

Definition
Energy that is stored because of an objects position.
Term

What is kinetic energy?

Definition

Energy an object has due to its motion.

Term
What is photosynthesis?
Definition

The process during which a plants chorophyll traps light energy and sugars are produced.

6co2+6h20+light energy-->C6h206+602

 

Term
What are energy transformations?
Definition

During types of energy transformations,the total amount of enery stays the same.Energy is never lost or gained-it only changes form.

Term
Name the 6 simple machines.
Definition
Lever,Wheel & Axle,Wedge,Inclinded Plane,Pulley,and Screw.
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