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Disturbances of space and matter
Waves
Waves start from an initial
Vibration
One characteristic of a wave is its
wavelength
the ______ frequency of a wave is the number of oscillations that a wave makes each second
Frequency
Sound waves can be transmitted by particles in different
Media
waves require a medium like air to transmit
Mechanical
waves can travel through matter or through a vacuum
Electromagnetic
Our brain can only detect _______, which includes colors like red and blue.
Visible light
sound waves can bounce off a surface this is called _____.
Reflection
______ occurs when the waves do not reflect but stay within that object.
Absorption
An object that lets light pass through it is
Transparent
An object that lets some light, but not a lot is
Translucent
An object that lets no light is
Opaque
The ______ provides light, supports life, and keeps the earth warm.
Sun’s energy
The causes the earths seasons: Winter, Summer, Fall, and Spring
Earth’s tilt
Seasons _____ the same all across the world
are not
