plates

Question 1

The procedures of a Constructive plate boundary.

Answer 1

1. Convection current will result in the two plates moving away from each other.
2. Magma will rise through the cracks of weaknesses/gaps, forming a volcano
3. New crust may be formed
4. Eruptions are frequent. A volcanic island is formed.

Question 2

The procedures of a Destructive plate boundary.

Answer 2

1. Oceanic and continental plate meet and move towards each other
2. Oceanic is subducted by continental as it is more dense
3. Friction between plates causes pressure to build up
4. When friction is overcome, the plates slip. Earthquake occur.
5. At the subduction zone, crust is melted. Magma rises through cracks/fissures, forming volcano.

Question 3

The procedures of a Conservative plate boundary.

Answer 3

1. Convection current causes the plates to move/slide past each other in same or opposition direction, at diff speed.
2. Due to friction between plates, pressure builds up.
3. Friction is eventually overcome; plates slip past. In a sudden movement, the earthquake occurs.

Question 4

Constructive, Destructive and Conservative are also named:

Answer 4

Divergent, Convergent and Transform.

Question 5

Describe how the plates moved in the 3 plate boundaries respectively.

Answer 5

Constructive: plates moving away from each other
Destructive: plate moving towards each other
Conservative: plates sliding past each other