Renewable Energy
👉 What is solar energy?
This energy comes from the sun.
👉 What is a wave?
A disturbance that carries energy.
👉 What is Bending of light?
refraction
Why can light travel in space but sound cannot?
What is light does not need a medium but sound does
Which energy source comes directly from inside Earth AND is renewable?
geothermal energy
👉 What is renewable energy?
Energy that does not run out.
what are the two main types of waves?
👉 What are transverse and longitudinal waves?
👉 What is Bouncing of light?
reflection
Device that changes wind energy into electricity.
wind turbine
What moves in waves but stays in place?
wave particles
👉 What is hydropower?
Energy from moving water.
What causes waves?
vibration
Part of eye that lets light in.
pupil
Predict what happens to wave energy as the wave spreads out.
it spreads out and becomes smaller
Explain difference between reflection and refraction
reflection = bounce,
refraction = bending?
Explain why solar energy is considered renewable.
it does not run out for billions of years?
👉 What is wave speed?
How fast a wave travels.
Put in order:
(light enters eye – brain interprets – light reflects – light focused)
reflects → enters → focused → interpreted?
Which property would you change to make a sound quieter?
amplitude
Why are X-rays useful in medicine?
they pass through soft tissue but not bones
If the Sun disappeared, which energy sources would be affected?
most renewable sources like solar and wind
If waves spread out, what happens to energy?
it still the same
Explain why we see different colors of objects.
because some wavelengths are reflected and others absorbed
A wave moves particles up and down while traveling forward. Identify the type and explain.
👉 transverse wave because motion is perpendicular?
What happens when light hits a mirror?
it reflects