SUBJECT: ENGLISH FOR SCIENCE

Please do these exercise and hand it in next meeting. Thank you.

I. Write a sentence about these following things (you can write either positive or negative sentence)

1. Moons gravityExample: Moons gravity causes the tides of the ocean.2. Earth3. Magnet4. Lunar EclipseExample: Lunar eclipse happens when the moon passes behind the earth.5. The moon6. Friction 7. Photon

II. Write 2 (two) sentences about one of these famous physicists.

1. Stephen Hawking2. Blaise Pascal3. Galileo Galilei4. Georg Ohm

III. Reading Comprehension.

GRAVITY AND OCEAN TIDESTidesare the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moonand theSunand the rotation of the Earth. The tides occur with a period of approximately 12 hours and 25 minutes, and with amplitude that is influenced by the alignment of the sun and moon and the shape of the near-shore bottom. Most coastal areas experience two high and two low tides per day. One of these high tides occurs at the time of the moon's closest approach. The other occurs when the moon is at its greatest distance. This is because at the point right "under" the Moon (the sub-lunar point), the water is at its closest to the Moon, so it experiences stronger gravity and is raised. On the opposite side of the Earth (the antipodal point), the water is at its farthest from the moon, so it is pulled less; at this point the Earth moves more toward the Moon than the water does causing that water to "rise" (relative to the Earth) as well. In between the sub-lunar and antipodal points, the force on the water is diagonal or transverse to the sub-lunar/antipodal axis (and always towards that axis), resulting in low tide. The sun also exerts on the earth a (less powerful) gravitational attraction which results in a secondary tidal effect. When the earth, moon and sun are approximately aligned, these two tidal effects reinforce one another (resulting in higher highs and lower lows). This alignment occurs approximately twice a month (shortly after thefullandnew moon). These recurring extreme tides are termed spring tides. Most moderate tides are termed neap tides (occurring shortly after the first and lastquarter moons). (adapted from Wikipedia)Decide whether these statements are True, False, or NOT GIVEN in the text.1. The gravity of the moon and the sun affects the quantity of the fish that may be caught by the fishermen.2. The position of the sun and the moon does not have any effect on the size of the ocean waves.3. In general there are two tides on the shore in a day, the low tide and the high tide, each happens once a day.4. Spring tides happen when the position of the sun and the moon is aligned.