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7th Grade Science

T.C. After School
Across
Organ located in the upper chest, just behind the sternum.
Chemical messages that are produced by endocrine glands.
Small tubes that release hormones.
The inner ear contains the:
Repeated echos.
Amount of energy a wave carries past a certain area each second.
Organ that produces estrogen and progesterone.
Down
Organs that produce testosterone.
Human perception of the intensity of sound.
Measure of the energy released by an earthquake.
Process of locating objects by bouncing sounds off of them.
Human perception of the frequency of sound.
Bits of rock or solidified lava dropped from the air.
Magma that flows onto Earth's surface.