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force

force. A force is a push or pull upon an object resulting from the object's interaction with another object. pull. A pull is a force that acts in the direction of the origin of the force. motion. Motion (physics), any physical movement or change in position or place. gravity.

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force

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  1. force A force is a push or pull upon an object resulting from the object's interaction with another object. pull A pull is a force that acts in the direction of the origin of the force.

  2. motion Motion (physics), any physical movement or change in position or place. gravity Gravity is the force that causes two particles to pull towards each other.

  3. position The point or area occupied by a physical object speed Speed is the rate of motion, or equivalently the rate of change in position, often expressed as distance traveled per unit of time.

  4. direction The line or course on which something is moving or is aimed to move or along which something is pointing or facing. mass

  5. lever A lever is a simple machine that makes work easier for use; it involves moving a load around a pivot using a force. simple machines wedge lever pulley screw A simple device, such as a lever, pulley, or inclined plane; a machine without moving parts. inclined plane wheel and axle

  6. inclined plane pulley

  7. wedge screw

  8. Wheel and axle

  9. Light A range of electromagnetic radiation that can be detected by the human eye transparent Allowing light to pass through

  10. translucent Allowing only some light to pass through opaque Not allowing light to pass through

  11. Reflection The bouncing of light off an object Refraction The bending of light as it moves from one material to another

  12. Convex lens A lens that is thicker at the center than it is at the edges Concave lens A lens that is thicker at the edges than it is at the center

  13. prism A triangular piece of cut glass used to break white light up into its constituent colors. ROY G. BIV The color seen in a rainbow: red, orange, yellow, green, blue, indigo, and violet.

  14. spectrum The different colors of light that are coming from a star Color The byproduct of the spectrum of light as it is reflected or absorbed

  15. rainbow An arc of colored light in the sky caused by refraction of the sun’s rays by rain vibration A quick back-and-forth motion; a trembling motion

  16. Sound wave Waves formed by compression of the material (as air) through which they travel regardless of whether they can be heard. pitch How high or low a sound is

  17. Loud Marked by intensity or volume of sound Soft Not loud, harsh or irritating

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