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Class 9 Oceans and Life worksheet
CBSE Social Science. The ocean floor, waves, tides and currents, tsunamis and cyclones, maritime zones and the Blue Economy. Every sheet has 20 questions in three sections and an answer key, and the numbers change every time.
Sample questions
Real questions from this chapter, as the app sets them. Tap Answer to see the answer and working.
Section A · multiple choice
- 1.
The deepest place on Earth is the:
- Mid-Ocean Ridge
- Singapore Strait
- Gulf of Khambhat
- Mariana Trench
Answer
(d) Mariana Trench
- 2.
What is a continental slope?
- the steep slope marking a continent’s true edge
- the deepest part of the ocean floor
- a flat-topped underwater mountain
- a volcanic underwater mountain below the surface
Answer
(a) the steep slope marking a continent’s true edge
- 3.
What is meant by “ebb tide”?
- how high a tsunami reaches on shore
- peaceful transit of a ship through territorial waters
- the high point of a wave
- low tide
Answer
(d) low tide
Section B · short answer
- 4.
What is submarine relief?
Answer
The landforms of the ocean floor, such as underwater mountains, valleys, plateaus and trenches.
- 5.
Describe each feature of the ocean floor: (a) guyot (b) trench
Answer
(a) a flat-topped underwater mountain (b) the deepest part of the ocean floor
Section C · long answer
- 6.
Describe the main features of the ocean floor.
Answer
The continental shelf near land, the steep continental slope, the flat abyssal plain, deep trenches, and underwater mountains such as seamounts, guyots and the Mid-Ocean Ridge.
Fresh sheets for your child
In the app, every Oceans and Life sheet is new: the app remembers the questions your child has already had and leaves them out. Print the sheet as a PDF, or use notebook mode and write the answers in a notebook.
Coming soon for Android and iPhone.