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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A force is a push or pull upon an object resulting from the object's interaction with another object.
A pull is a force that acts in the direction of the origin of the force.
Motion (physics), any physical movement or change in position or place.
Gravity is the force that causes two particles to pull towards each other.
The point or area occupied by a physical object
Speed is the rate of motion, or equivalently the rate of change in position, often expressed as distance traveled per unit of time.
The line or course on which something is moving or is aimed to move or along which something is pointing or facing.
A lever is a simple machine that makes work easier for use; it involves moving a load around a pivot using a force.
A simple device, such as a lever, pulley, or inclined plane; a machine without moving parts.
A range of electromagnetic radiation that can be detected by the human eye
Allowing light to pass through
Allowing only some light to pass through
Not allowing light to pass through
The bouncing of light off an object
The bending of light as it moves from one material to another
A lens that is thicker at the center than it is at the edges
A lens that is thicker at the edges than it is at the center
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.
The different colors of light that are coming from a star
The byproduct of the spectrum of light as it is reflected or absorbed
An arc of colored light in the sky caused by refraction of the sunâ€™s rays by rain
A quick back-and-forth motion; a trembling motion
Waves formed by compression of the material (as air) through which they travel regardless of whether they can be heard.
How high or low a sound is
Marked by intensity or volume of sound
Not loud, harsh or irritating