PHSC 121 Liberty University Exam 3 Questions with All Correct Answers

PHSC 121 Liberty University Exam 3 Questions with All Correct Answers We have seasons because - Answer-the earth's axis of rotation is tilted 23.5 degrees relative to the ecliptic Which of the following is true of the vernal equinox - Answer-the Sun is now crossing the equator into the northern hemisphere and the northern hemisphere begins to face toward the Sun For someone standing on the Tropic of Cancer, the sun will appear at the observer's zenith ___________ each year and at the equator an observer will see the sun at zenith ___________ each year - Answer-once/twice Which of the following is MOST important in creating our seasons today - Answer-the angle of the sunlight when it strikes the ground The Earth is farthest from the Sun in __________ and the Earth - Sun distance varies about _________ % in a year - Answer-July/3 Tides on the Earth are caused mostly by - Answer-the Moon because it is closer to the earth than the Sun Highest tides occur during which phase of the moon? - Answer-New and Full How frequently does a Spring tide occur? - Answer-twice each month The effect of the Sun on Earth tides is about ____________ x the effect of the Moon. Also, water tidal ranges (height of the tides) can be from about 30 cm to about ____________ meters. - Answer-half/16 Which of the following is not true of the winter solstice? - Answer-the northern hemisphere receives the most direct sunlight of the year