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Forces Motion Energy 10 pt 10 pt 10 pt 10 pt 20 pt 20 pt 20 pt 20 pt 30 pt 30pt 30 pt 30 pt 40 pt 40 pt 40 pt 40 pt 50 pt 50 pt 50 pt 50 pt Any push or pull that causes two or more objects to change direction. Force A force that opposes motion when 2 surfaces rub against each other. Friction A force of attraction between magnets and magnetic objects. . . Magnetism The force that pulls objects in the universe together. . . Gravitation The three forces that affect objects on Earth every day are. . . Friction, magnetism, gravity The state of matter that does not have a definite shape or volume. Balanced forces The ability of one substance to be dissolved in another substance. Unbalanced forces Adding or subtracting the individual forces gives a value of the combined forces that is called its . . . Net force Something that makes a task easier by changing the size or direction of a force or the distance over which the force acts. A machine. The use of a force to move an object through a distance. Work An object’s place or location . . . Position A measure of the distance an object moves in a given amount of time. . . Speed An object’s speed in a particular direction is its. . . Velocity Any change in velocity is called . . . Acceleration. A measure of how hard it is to slow down or stop an object . . . Momentum. The property of matter that keeps an object moving in a straight line or keeps it at rest . . . Inertia Finish this statement: For every action, there is an equal and opposite ________. Reaction. The ability to cause changes in matter is called . . . Energy The energy of motion is called . . . Kinetic energy. The energy that an object has because of where it is or because of its condition is called . . . Potential energy. The table of elements in order of increasing atomic number; grouped by similar properties. Periodic table A substance made of the atoms of two or more different elements. Compound What is photosynthesis? The process plants use to make food Where do plants get their green color? From chlorophyll What do plants make during photosynthesis? Oxygen!!