Compression is defined as a region of A. high altitude in a medium caused by a passing wave
B. Low pressure in a medium caused by a passing wave
C. zero pressure in a medium caused by a passing wave
D. High pressure in a medium caused by a passing wave

B.

Explanation:

It is B. because when u play with a slinky it doesn't take much pressure to make it compress.

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.