Electromagnetic radiation is:

a- energy that is electric and magnetic

b- energy that is created by atoms and electricity

c- energy that is magnetic and solar

d- energy that is created only by the sun

pe = weightxheight = 2000x1000=2,000,000joules

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.