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SAI INTERNATIONAL SCHOOL

SUBJECT – GEOGRAPHY STD VII
TOPIC- LESSON -5 WATER
SUB TOPIC- TIDES
HOME ASSIGNMENT
OBJECTIVE
1-What causes the ocean's tides?
a) Wind moving across the surface of the water
b) Energy from the Sun's rays
c) Gravitational pull of the Sun and Moon, and the rotation of the Earth
d) Only the rotation of the Earth.

2-What type of tide occurs when the sea level is at its lowest?
a) High
b) Spring
c) Neap tide
d) Semidiurnal

3-The rhythmic rise and fall of ocean water twice in a day is called______
a) Tide
b) Ocean current
c) Wave
d) Tsunami

4-Consider the followings statements regarding the spring tides:

1) During spring tide, the sun, the moon and the earth are in a straight line.

2) The height of the tide will be higher during spring tide.

a) Only 1 is correct
b) Only 2 is correct
c) Both 1 & 2 are incorrect
d) Both 1 & 2 are correct

5-During which two lunar phases do Spring Tides occur?

a) New moon & full moon
b) First quarter & full moon
c) New moon & first quarter
d) Full moon & third quarter