Question 1
The uppermost mantle is a plastic, whereas the asthenosphere is rigid.
◦ true
◦ false
Question 2
A brittle rock is likely to respond to stress by ________, whereas a ductile rock is likely to respond by ________.
◦ stretching; breaking
◦ breaking; bending
◦ isostatically uplifting; bending
◦ isostatically uplifting; breaking