Flashcards in 2 B & C Deck (24)
True or false: all forces act in pairs
_________ forces occur when objects touch each other.
The force of _______ pushes objects together
The force of ________ causes the particles in an object to move across each other in layers, like when rocks move past each other
The force of _______pulls on an object, usually in a straight line, like tug of war
The force of ________opposes the motion of objects in contact, like ice grinding against rock.
True or false: field forces have to touch.
false. Field forces DO NOT touch. The object doing the force can attract or repel the objects in the space around it, like MAGNETIC FORCE
___________gives things weight and its effects are the most noticeable, like keeping the planets in place.
What acts against gravity to keep you from sinking into solid ground?
The ground. It pushes back against gravity.
What force is lightning?
What force does a rope use when holding a climber?
_________ is the ability to do work
________ is a force that acts on an object as it moves through a distance.
_______ is the ability an object has to do work.
Example: when you lift a weight, you use energy.
________ energy is an energy that causes things to move, like moving water or a hurricane.
___________ energy occurs when a force acting on it gives it the potential to move, like a boulder on top of a peak
A force is a push or a ________
What are 2 kinds of mechanical energy?
Potential and kinetic
All objects have thermal energy. The _______ an object is, the more thermal energy it has.
Ex: the sun has the most thermal energy
________ energy is produced by particle motion moving in the same direction.
Example: music or waves
_________ energy is energy that uses electrical charges, like lightning
Everything that gives of light produces ________ energy
When atoms are split, ________ energy forms.