OCE 1001 Exam 3 possible questions 1 The barycenter follows a smooth path around the sun 2 The difference between centripetal forces and gravitational forces is called the resultant force 3 If the resultant force has a significant horizontal component tangential to Earth s surface it produces tidal bulges on Earth creating what are known as tide generating forces 4 A lunar day is 24 hours and 50 minutes in duration 5 Measurable tidal bulges occur in the ocean the atmosphere and Earth s crust 6 Of the following statements about the force of gravity between two bodies which is are true The force of gravity between two bodies decreases as distance increases The force of gravity between two bodies is most affected by a change in distance The force of gravity between two bodies increases with an increase in mass 7 Of the following statements about the tides which is are true All except The Sun because of its larger size has more effect on Earth s tides 8 Of the following statements about the contribution of the Sun and the Moon to Earth s tides which is are true The Moon exerts over twice the gravitational pull of the Sun on Earth s tides because of its proximity to Earth The lunar tidal bulges are about twice the size of the solar tidal bulges The Sun s contribution to the tides is less than that of the Moon 9 If it is January and the Moon is in syzygy what additional factor would contribute to extreme tidal ranges around the world the moon in perigee 10 The vertical difference between consecutive high and low tides is called the tidal range 11 Spring tide occurs about twice per month 12 Neap tides occur when the moon is in quadrature 13 When the Earth is at its greatest distance from the sun it is said to be at aphelion 14 A proxigean tide occurs when the Moon is at perigee at a time of syzygy 15 Of the following statements about lunar phases which is are true Over the few days of a waxing gibbous moon the tidal range increases Over the few days of a waxing crescent moon the tidal range decreases 16 The center of an open ocean tidal system is called a an amphidromic point 17 What tidal pattern would best describe a coastline that experienced a maximum tidal range of 6 ft in the morning and a smaller 2 ft range in the late afternoon mixed 18 An area that experiences diurnal tides will have one high tide and one low tide daily 19 In the United States semidiurnal tides commonly occur along the Atlantic coast 20 Some of the tide height numbers in your tide table are preceded by minus signs or in some cases printed in red This tells you that spring tides are occurring 21 Of the following statements about tidal patterns and tidal charts which is are true A tidal day is 24 hours and 50 minutes long A mixed tidal pattern has two lows of unequal height and two highs of unequal height every tidal day The tidal range is the difference in height between a high tide and a low tide A semidiurnal tidal pattern has two low tides every tidal day 22 The Bay of Fundy is well known for which tidal characteristic very high tidal range 23 Water flowing out of an enclosed basin due to the tides is called a an ebb current 24 A boat is most likely to be carried out to sea from a harbor by a n ebb current 25 Which factor would increase the amount of energy an estuarine tidal power plant could generate large estuarine volume 26 Disadvantages of tidal power plants relative to conventional thermal plants include higher initial plant costs periodicity of tidal currents and impacts on the marine environment 27 Match the term with the appropriate phrase Diurnal tidal pattern 28 Match the term with the appropriate phrase Gravitational tidal force 29 Match the term with the appropriate phrase Resultant tidal force 30 Match the term with the appropriate phrase center of an open ocean tidal system amphidromic point 31 Match the term with the appropriate phrase smallest tidal range in the lunar cycle neap tide 32 Match the term with the appropriate phrase water moving out from an inlet or bay due to approaching low tide ebb current 33 B New moon A Solar tidal bulge D Full moon C Lunar tidal bulge 34 D First quarter moon A Solar tidal bulges C Lunar tidal bulges B Third or last quarter moon 35 B Waxing crescent C Waning crescent A Waning gibbous D Waxing gibbous 36 D Aphelion B Perihelion A Apogee C Perigee 37 D Datum A Area with diurnal tidal pattern C Area with mixed tidal pattern B Area with semidiurnal tidal pattern E Tidal range F Tidal period 38 The section of the coast that is exposed at low tide and submerged at high tide is called the foreshore 39 The particle size on a beach is related to whatever material is locally available 40 What condition would create a weak longshore current a wave set approaching parallel to the shore head on 41 Winter beaches are narrower than summer beaches due to high energy waves during the winter 42 Southern California beaches in winter typically are narrow and rocky That is because heavy winter wave activity moves the sand out to the longshore bar and uncovers the rocks underneath the sand 43 Of the following conditions which result in the accumulation of sand on the berm thereby making the berm wider Higher beach infiltration rates Light wave activity small waves A beach dominated by swash 44 Eroded material is carried along coastlines from high wave energy areas to low wave energy areas 45 The rate of wave erosion along a coastline is determined by all the following except the direction of the longshore current 46 All the following are characteristic of depositional shores except marine terraces 47 If one were to walk from the ocean landward across a barrier island complex in which order would one encounter the following environments beach dune barrier flat high marsh low marsh 48 Large deposits of sediment at the mouths of rivers are called deltas 49 identify the word and or phrase that does NOT fit the pattern D tombolo 50 Features of a depositional coast may include spits barrier islands tombolos and deltas 51 Southern California beaches would have more sand if dams were removed from streams flowing to the coast 52 Of the following characteristics or features which is are associated with erosional shores All except A large volume of sediment input 53 What would you expect to happen to sea level along the Antarctic coastline if the ice cap covering the continent melted Sea level would decrease due to isostatic adjustment 54 Submerging shorelines might have all of the
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