Astudent made a model of isostasy by placing a block of wood in a beaker of water. how can the student demonstrate isostatic rebound using her model ? a. press the block down and let go b. pour out all the water c. blow vigorously on the block d. add water until the beaker over flows

Option (A)

Explanation: Isostacy is considered to be the state of gravitational balance between the lithospheric crust and the rocks of asthenosphere.

           When materials are added to the crust, the weight increases and  the block goes down. Whereas the materials when gets erode, weight of the block decreases and subsequently rises up.

  This state of balancing the crustal rocks flowing over the rocks of asthenosphere layer is known as the Isostacy.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.