Earthquakes
A sudden violent shaking in the ground.
Earthquake.
Sound is a form of energy that travels as vibrations through mediums like air.
True.
What is a tough membrane about 0.1 mm thick and transmits sound from the outer ear to the middle ear?
What is a eardrum?
What is any collection of sounds that are deliberately used in a regular pattern?
A flat, smooth mirror is a ________
A plane mirror.
A long high sea wave that is caused by an earthquake?
What is a tsunami?
A medium is a repeating disturbance that transfers matter through matter or space.
False. (wave)
What is the human perception of sound volume and primarily depends on sound intensity.
Loudness or pitch?
Loudness.
What is the human perception of sound volume and primarily depends on sound intensity.
Loudness or pitch?
Loudness.
A mirror that curves outward, like the back spoon is a ________
Convex mirror.
What is the large section of Earth's lithosphere that move independently and interact with each other?
What is tectonic plates?
Crests are high points of a transverse wave.
True.
______________ is the change in wave frequency due to a wave source moving relative to an observer moving relative to a wave source.
Doppler Effect.
_______ is an image of a distant object produced by the refraction of light through air layers or different densities.
Mirage.
_______ is a distance from the center of the mirror to the focal point.
Focal length.
A few seconds to a few minutes.
Reflection is the bending of a wave around an object.
False. (Diffraction)
A high or low sound seems to be.
A: Pitch
B: Intensity
C: Decibel
Pitch.
What is a transparent material that selectively transmits light?
Filter.
An imaginary straight line drawn perpendicular to the surface of the mirror at the mirror's center.
A: Concave mirror.
B: Optical axis.
C: Focal length.
Optical axis.
What happened on March,11,2011?
A 9.1 magnitude earthquake happened in the northeast coast of Japan.
An interference happens when a sound bounces off a surface and bounces back to you.
False(echo)
A vibration whose frequency is a multiple of the fundamental frequency.
Overtone.
A light of only one wavelength that travels in one direction with a constant distance between correspond crests of waves?
A: Incoherent light.
B: Holography.
C: Coherent light.
An image that is formed when light rays coverage to form the image.
Real image.