An airplane wing is designed to make the air move
a. at the same speed over the top as under the bottom.
b. slower over the top than under the bottom.
c. faster over the top than under the bottom.
d. slower over the top as well as under the bottom.

An airplane wing is designed to make the air move  faster over the top than under the bottom. (c)  They do this by making the top of the wing curved and the bottom flat, so the air that flows over the top has farther to go.

It turns out, according to a scientist named Bernoulli, that air exerts lower pressure when it moves faster. So if it moves faster over the top of the wing, then there's less pressure on the top of the wing and more on the bottom, and the wing thinks there's a force that's LIFTING it . . . very convenient and useful if the wing is part of an airplane !

i feel your pain too because i cant find my dad and hes been missing for 17 years of my life

explanation:

he went to the supermarket with your dad

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.