Interactive Sea Floor Spreading Games

Once the basalt cools completely into solid rock the.

Interactive sea floor spreading games.

The rocks on the seafloor show the history of the magnetic changes in the earth. South becomes north and north becomes south. In total there are nine games in this learning objective including. The discovery of this phenomenon was an important bit of evidence that helped confirm the theory of plate tectonics.

Rocks on the seafloor on either side of a mid ocean spreading ridge preserve a record of the earth s magnetic field over time. Seafloor spreading is the continuous process of forming new igneous rock at midocean ridges by injection of magma that forms new seafloor. As magma starts to harden into rock iron rich minerals solidify first. One intriguing thing about the rock that comes from seafloor spreading is that it shows the history of the earth.

Play continental drift and seafloor spreading games in an arcade style format. Most basalt magmas contain abundant molten iron. The cycle of new seafloor forming and old seafloor subducting is extremely slow with the plates shifting just a few centimeters per year. This interactive activity is simple to prepare and to execute and allows the students to understand seafloor spreading and the position of newer rock and older rock in relation to the mid oceanic ridge.

Their crystals are pulled into alignment by the earth s magnetic field just like a compass needle is pulled towards magnetic north. The interactive animation below illustrates this concept. This can result in an ever widening seafloor at the. Seafloor spreading is the movement of magma through a crack in a mid oceanic ridge.

Because it takes a long time for the crust to move the crust at the trenches is about 200 million years old. Bbc earth recommended for you. Enjoy the videos and music you love upload original content and share it all with friends family and the world on youtube. Bees kill a giant hornet with heat buddha bees and the giant hornet queen bbc earth duration.

Search for the seafloor. The process is continuous because forces cause opposite sides of the midocean ridge to constantly move apart making new room for the process to repeat.