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GR8-Test 4
BOOM SCIENCE
Term | Definition |
---|---|
Wavelength | The distance from any point on a wave to an identical point on the next wave. |
Amplitude | The maximum distance particles vibrate to their highest position in a wave. |
Refraction | The bending of a light wave as it passes between two substances and changes the speed of a wave. (Ex. light going into a curved lens) |
Opaque | An object that is not transparent or translucent and light does not pass through at all |
Scattering | The interaction of light with matter that causes light to change energy, direction, or both. (Ex. Sunlight shining on water) |
Concave Lens | A lens that is thinner in the middle than the edges; makes objects appear farther away and smaller |
Convex Lens | A type of lens that in thicker in the middle than the edges and curves outward; makes objects appear larger and closer |
Interference | A combination of two or more waves that results form a single wave; it can cause television or radio waves to become scrambled. |
Lens | A transparent objects that refracts light waves; can cause the light waves to come closer together or move farther apart. |
Wave | A periodic disturbance in a solid, liquid, or gas as energy moves through matter; all energy moves this way |
Doppler Effect | An observed change in the frequency of a wave when the source or observer is moving. |
Diffraction | The change in direction of a wave when a wave finds an obstacle or edge |
Analog Signal | A signal whose properties change continuously in a given range. |
Digital Signal | A signal that can be represented as a sequence of discrete values or 1's and 0's used by computers |
Laser | A device that only produces light of one wavelength |
Electromagnetic Wave | A wave that consists of electric and magnetic fields that vibrate at right angles to one another |
Longitudinal Wave | A wave in which the particles vibrate parallel to one another or move back and forth |
Standing Wave | A pattern of vibrations that simulates a wave standing still |
Transverse Wave | A wave in which the particles move perpendicular or side to side as the wave is moving |
Medium | A physical environment in which things happen; can be air, water, or a solid object |
Gravity | The force that attracts a body towards the center of the earth |
Drag | Resistance by friction from air or water moving over a surface |
Free Fall | The condition of unrestrained motion in a gravitational feild |
Inertia | An object's resistance to change in motion |
Lift | A upward force acting on an object |
Net Force | the resulting force determined by combining all of the forces acting on an object |
Projectile Motion | an object upon which the only force acting is gravity |
Terminal Velocity | Consistent speed attained by a body while falling |
Weight | The force of gravity on an object |