Show:
Earthquakes
Rocks
Waves
Eyes & Ears
Measurement
100
Force that squeezes rocks together
What is compression?
100
This type of rock is produced when magma or lava cools and hardens
What is igneous rock?
100
Waves carry this from one place to another
What is energy?
100
The human perception of the frequency of sound is called
What is pitch?
100
The distance between two adjacent crests or between two adjacent troughs is called this
What is a wavelength?
200
Force that pulls rocks apart
What is tension?
200
A rare mineral that can be cut and polished, giving it a beautiful appearance
What is a gem?
200
All warm bodies emit this type of wave
What is an infrared wave?
200
The process of locating objects by bouncing sounds off of them is called
What is echolocation?
200
The Mercalli scale describes this related to an earthquake's amount of damage in a specified location.
What is intensity?
300
The point in Earth's interior where the energy release of an earthquake occurs
What is the focus?
300
Rocks are classified as foliated or nonfoliated based on this
What is layers or lack of layers
300
This type of wave can travel through empty space
What is an electromagnetic wave?
300
The part of the ear that amplifies sound is the
What is the middle ear?
300
Secondary waves cannot travel through this
What are liquids?
400
The magnitude of an earthquake is measured by this
What is the Richter Scale?
400
This type of rock is formed when older rocks are heated and/ or squeezed
What is metamorphic rock?
400
The number of wavelengths that pass by a point each second is called
What is frequency?
400
The transparent front surface of the eye is called
What is the cornea?
400
Frequency is measured in this unit.
What is hertz?
500
When the elastic limit of rocks is passed, they break, and move along these
What are faults?
500
Rocks formed when pieces of rocks, plant and animal matter, or dissolved minerals gather into layers are called
What is sedimentary rock?
500
The bending of a light wave around an object is called
What is diffraction?
500
The colored ring of muscle that controls the size of the pupil is called
What is the iris?
500
On a topographical map, elevation and slope are shown using this symbol
What are contour lines?