An easy science mini-quiz !!?

Easy quiz ..can you do it ..Aren`t there any one who loves science ,for my last question ..no one answered even though it was easy and basics .

1.Divers` watches have to be specially sealed to keep the water out .
They have to depth rating ,e.g.'waterproof to 200m'.
a. What changes with water depth that could affect the watch ?
b. What might happen if diver goes too deep with the watch on.

3.A patient`s drip bag is hung high on a stand .Liquid flows from the
bag into their blood,to give them food or drugs .Explain why the bag
is raised up,using the words 'water pressure' and 'weight'.

25-30 = Out standing

20 - 25 = Excellent

15 -20 = good

10 - 15 = Satisfactory

0-10 - Poor and weak
Guys ...No one can answer ..
Looks like this science section is very poor !!
Very good Jeff !
You deserve a 24 !

Comments

One Response to “An easy science mini-quiz !!?”
  1. Jeff says:
    April 3, 2010 at 12:38 pm

    1a
    As you go deeper, the water pressure increases.

    b
    The pressure could force water into the watch or break the face plate.

    3.
    If the drip bag was hung low, the person’s blood pressure might push liquid into the bag rather than letting flow out. Instead, the bag is hung high so the weight of the liquid pushes down and increases the pressure of the liquid into the body such that it is greater than the body’s blood pressure pushing out.