Full Study Guide Flashcards
What are magnets attracted to?
Iron, Cobalt, or Nickel
What is a magnetic North Pole attracted to?
The South Pole of a compass needle.
Who decided the polarity of positive and negative charges?
Benjamin Franklin
What is a positive charge attracted to?
A negative charge
A hot cup of coffee feels warm when you place your hand over it and feel the steam rising. What kind of heat interaction is this?
Convection
Energy can be converted from one form to another during and interaction and can be used for ______.
Useful purposes efficiently
Is the force of gravity stronger on smaller or more massive objects?
More massive objects
What is the net force of most objects?
Zero
What do force arrows indicate?
Force direction and strength
What does Newton’s third law state?
When one object exerts a force on another object which is equal in strength and opposite in direction.
When two forces are added together, such as gravity and the floor on your shoes, what is the net force?
Zero
Speed of Waves
A property of the medium in which the waves are occurring and is determined by the medium, which might change in water if the water is deeper or shallower, is equal to [(frequency) • ( the wave length), and is about 770 mi/hr for sound waves in air.
Sound Waves
Get weaker as you go far away, can break a crystal glass, and are longitudinal waves
Waves are…
Can be weak or strong, can be transverse or longitudinal; can be sound, water, springs, rope, and can be high frequency or low frequency
What kind of rays can light rays be?
Light waves can be radio, microwave, infrared, visible, ultraviolet, x-ray, or gamma rays
