MTTC Integrated Science Must Revise Questions and Correct Answers

Transverse wave - back and forth, perpendicular Compressional wave - rarefaction and compression Wavelength - The distance between two corresponding parts of a wave Frequency - the number of complete wavelengths that pass a point in a given time Refraction - The bending of a wave as it passes at an angle from one medium to another Intensity of the wave - amplitude Pitch - Related to frequency. High frequency, high pitch Longitudinal - particles move parallel to the direction of the wave. Sounds waves How the light rays formed shadows? - an opaque object or material is placed in the path of rays of light, the light rays that of pas the edges of the material make an outline for the shadow. Getting closer to the light source makes the shadow bigger. Does light travel in a straight line? - TRUE Law of reflection - the angle of incidence is equal to the angle of reflection converging lens (convex) - Parallel incident rays will reflect through the lens and converge to a point. When they travel from a focal point, they will travel parallel. diverging lens (concave) - When they travel parallel and diverge, never intersect. When they travel to the focal point, they will travel parallel. electromagnetic spectrum - Radio: longest/lower frequency, red (MRI) Microwave: red (Ultrasound) Infrared: red Visible: yellow to blue Ultraviolet X-ray (X-ray/CT) Gamma ray (PET, SPECT)