Exam practice Term 4 Flashcards
What is a proton
Subatomic particle with a positive electrical charge
What is a neutron
One of the three subatomc particles that make up an atom
what is the difference between a proton and a neutron
their electrical charge
Which type of nuclear radiation travels at the speed of light
gamma radiation
Different isotopes of the same element contain different numbers of
Neutron
How many electrons are there in every neutral atom of hydrogen
One
what is the four layers of the earth
inner core, outer core, mantle, crust
which is the thickest layers of the earth
the mantle
what is the ring of fire
a path around the edges of the Pacific Ocean that contains the majority of the earth’s volcanoes.
which of the layers 0f the earth is mostly iron and is about 1200km thick
the inner core
what are tectonic plates
big slab of solid rock made up of earth’s lithosphere (crust and upper mantle)
what is an atom
An atom is the smallest building block of matter, consisting of a nucleus and electrons.
