wave and tidal energy

What causes surface waves?

• underwater volcanoes
• earthquakes
• wind
• landslides

Which of the following is an underwater wave?

• tidal wave
• surface wave
• tsunami
• ocean wave

Many people believe that ocean waves move water.  However, ocean waves really transfer ______.

• wind
• sand
• energy
• pressure

Which direction do ocean waves move?

• back and forth
• up and down
• in a side-to-side motion
• in a circular motion

1. Which produces the tindal energy mainly?

• the force between the sun and moon

• the force between and air

• the force between the water and th earth

• the force between uribi and petro

what is an advantage of using a tidal stream generator?

• it doesn't affect the environment

• it's cheaper than other kinds of energy

• Could be installed wherever !

• It's easy to control

what is a tidal barriage?

• a kind of energy which is produced by the water from rivers or seas

• a big structure that is used to produce eolic and tindal energy from the sea

• an estructure that its used to capture energy from water in movement

• a building underwater that can take advantage of the tinds produced by fishes

what kind of energy is used in a hydraulic turbine?

• Solar energy from ultraviolet rays

• Potencial energy from the movement of tinds

• Kinetic energy from the movement of tinds underwater

• electric energy from atoms underwater

One advantage of tidal power is -

• it can be used anywhere
• tides are predictable
• tidal power does NOT need a back up source
• it is available ALL day

A "dam" built to harness the energy from ocean tides is called a - 

• reservoir
• barrage
• turbine
• generator