[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"exercise-B2-963":3},{"preview":4,"open":14,"missing":37},{"id":5,"number":6,"total":7,"level":8,"course":9,"activity":10,"discriminator":11,"title":12,"slug":13,"instructions":14,"excerpt":15,"prompts":16,"lock":19,"access":20,"updated":21,"previous_id":22,"next_id":23,"previous":24,"next":28,"first":32},963,6,83,"B2","reading","long_text","reading_long_text","The Moving Jigsaw Beneath Us","the-moving-jigsaw-beneath-us",null,"Most earthquakes are caused by the large, slow movements of the great slabs of rock that make up the outer shell of the Earth. These slabs are called lithospheric plates, or tectonic plates. Earthquakes do not usually happen in the middle of a plate; instead, they happen at the boundaries, where one plate meets…",[17,18],"Earthquakes occur when what parts of the tectonic plates collide?","Tectonic plates can get their names from what?","login","pro","2026-10-02T14:14:49",962,964,{"id":22,"number":25,"title":26,"slug":27},5,"A Dance of Two Partners","a-dance-of-two-partners",{"id":23,"number":29,"title":30,"slug":31},7,"A Day at the Playscheme","a-day-at-the-playscheme",{"id":33,"number":34,"title":35,"slug":36},958,1,"On the Trail of Bigfoot","on-the-trail-of-bigfoot",false]