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Marine Science Ch 11
Ch 11 Review MCs
| Question | Answer |
|---|---|
| What kind of waves are tides? | force waves |
| How do intertidal organisms separate themselves? | into 3 or more bonds of zones by how much water they need |
| What determines the velocity of a tidal wave? | depth and land masses |
| When high or low tidal currents begin to change direction, it is called: | slack water |
| What is the net force of inertia and gravitational attraction combined? | solar-lunar inward pull (tractive force) |
| Who came up with the dynamic theory of tides? | Pierre-Simon Laplace |
| What is an example of a true tidal wave? | tidal bore |
| What organism uses the tides, specifically high spring tides, to time their breeding behaviors? | gruñion |
| What is the Earth's greatest distance from the sun? | aphelion (3.7 million kilometers) |
| What is an amphidromic point? | the node near the center of an ocean basin |
| What is one of the newest techniques employed to measure tides? | satellites |
| The sun and moon are aligned in a right angle with Earth at its vortex. What kind of tide would this produce? | neap tide |
| What does Newton's gravitational model not consider when determining influences on tides? | position of land masses and ocean depths |
| What is needed to calculate the speed and direction of tidal current while at sea? | ocean depth |
| What is the tidal datum in reference to in regions with semidiurnal mixed tides? | the average of the lowest low tides |
| What is the relationship between the heights of tides and the amphidromic point? | The tidal height increases as the wave moves further away from the amphidromic point |
| What is the name for tides caused by inertia and the gravitational force of both the sun and the moon? | astronomical tides |
| What has a large impact on the heights and patterns of tides? | the shape of ocean basins and land masses |
| What type of current occurs during a high tide? | flood current |
| What is an ebb current? | water rushing out because of the fall in sea level as the tide trough approaches |
| When do tidal currents reach their maximum velocity? | midway between the high tide and low tide |
| Why does the moon have more of an impact on tides than the sun? | it is closer |
| The west coast of the United States receives two high tides and two low tides of varying heights per day. What kind of tidal pattern is this? | mixed tides |
| Due to tractive forces, solar bulges are _____ in comparison to lunar bulges. | diminishes |
| Where was the first tidal powered energy station positioned? | France in 1966 |
| What is the reference level to which a tidal height is compared to? | datum or zero point |
| Why is the same side of the moon always facing Earth? | tidal friction |
| Who was the first to recognize the connection of the moon's position to the tides? | Pytheas |
| What is a disadvantage of using tidal power? | doesn't generate enough power |
| What are some extraneous factors that are able to be taken into consideration when predicting tides years in advance? | meteorological tides |
Created by:
Koolia101