Question

1. match the illustrations with the types of stress.

tension
compression
shearing

1. choose which type of boundary created each feature.

east african rift valley
transform boundary
convergent boundary
divergent boundary

Explanation:

• Question 7:
• Tension: In tension, forces pull apart. If the illustration shows layers being pulled apart (like the first one with arrows pointing away from each other), it is tension.
• Compression: Forces push together. If layers are being squeezed (not shown in the common stress - type illustrations here, but if arrows were towards each other), it would be compression.
• Shearing: Forces act parallel but in opposite directions. If the illustration shows a side - to - side movement (like the third one where there is a displacement along a plane), it is shearing.
• Question 8:
• The East African Rift Valley is formed by tectonic plates moving apart.
• A divergent boundary is where plates move away from each other.
• A transform boundary is where plates slide past each other.
• A convergent boundary is where plates move towards each other.

Answer:

• Question 7:
• First illustration (arrows pointing away) - tension.
• Second illustration (not a standard one for the given options, but if we assume a non - shown compression, it would be if arrows were towards each other).
• Third illustration (side - to - side displacement) - shearing.
• Question 8: divergent boundary.