Give an example of a manipulative variable and a responding variable.

There are 2 main types of variables:

Manipulated Variable: The variable that is changed by the scientist; the ‘I control’ variable

The MV (manipulated variable) is what you do!

Responding Variable: The variable that might change because of what the scientist changes – what is being measured

I scared my brother.This is the responding variable. This happened in response to what you did.

My brother screamed.

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.

d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.