Please answer the pictures below in sequential order, (there's more than 1) I'd really appreciate it. Happy holidays guys!

explanation:

a fuel engine ( known as a gasoline engine in american english )is an internal combustion engine with spark ignition, designed to run on petrol (gasoline) and similar volatile fuels.

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.

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it