Question

Self Practice 1F
1. A submarine submerged at a depth of -15 m, dives 20 m more. What is the new depth of the submarine?
2. The temperature was -3°C in the morning and rose by 10°C by noon. What was the temperature at noon?
3. The day time temperature on Mercury can reach 430°C. The night time temperature can drop to -180°C.
How much can the temperature change during one day?
4. The lowest point of the Japanese Trench in the Pacific Ocean is -10,372 m. The lowest point of the Puerto
Rico Trench, in the Atlantic Ocean, is 1,172 m higher. What is the depth of the Puerto Rico Trench?
(a) -9,200 m
(b) 8,200 cm
(c) -1,172 cm
(d) -11,544 cm
5. A submarine at - 250 m dives to a depth of 6 times its initial depth. To what depth does the submarine dive?
(a) -256 m
(b) -244 m
(c) -1,500 m
(d) -5,000 cm​

Answer 1

Answer:

1. -35 meter

2. 7.C

3.610.C

4.(a)

5.(c )