6E3D Waves Currents and Tides

What causes the regular rise and fall of water levels in oceans and lakes?

• The rotation of Earth on its axis

• The gravitational pull of the Moon and the Sun

• The movement of ocean currents

• The wind blowing across the water

Which of the following is true about the Moon's gravity compared to the Sun's gravity on Earth?

• The Sun's gravity is stronger because it is more massive

• The Moon's gravity is stronger because it is closer to Earth

• The Sun's gravity is stronger because it is closer to Earth

• The Moon's gravity is weaker because it is less massive

What is the primary cause of surface waves in the ocean?

• Earthquakes in the ocean

• Wind blowing along the surface of the water

• The gravitational pull of the Moon

• The rotation of Earth

How often do high tides occur at any given place on Earth?

• Once a day

• Twice a day

• Every 6 hours

• Every 12 hours

What is the main difference between tsunamis and tidal waves?

• Tsunamis are caused by geological events, while tidal waves are caused by gravitational forces

• Tsunamis are caused by gravitational forces, while tidal waves are caused by geological events

• Tsunamis and tidal waves are the same

• Tsunamis are less destructive than tidal waves

What effect does the full moon have on tides?

• It causes lower tides

• It causes higher tides

• It has no effect on tides

• It causes tides to occur more frequently

What is the effect of inertia on tides?

• It causes water to move towards the Moon

• It causes a second tidal bulge on the opposite side of Earth

• It prevents tides from occurring

• It causes tides to be weaker