Which of these are true??? o The earths outer layer, the crust, is split into large sections called plates.
o Convection currents are when heat rises (like a lava lamp) and this moves the plates.
o The earths continents used to be joined with each other like a jigsaw puzzle.
o The earths plates stopped moving 1.7 million years ago.
o The theory of plate movement is called plate tectonic theory.

5 is correct

The theory of plate tectonics states that the Earth's solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. Oceanic and continental plates come together, spread apart, and interact at boundaries all over the planet.

i'm sure the answer you are looking for would be

a. an ice age

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