When materials cool down, their kinetic energy ________________ (increases/decreases). As this happens, the particles move ___________ (more/less) and become more packed together. This causes the material to _______________ (contract/expand).

Question

When materials warm up, their kinetic energy ________________ (increases/decreases). As this happens, the particles move ___________ (more/less) and become less packed together. This causes the material to _______________ (contract/expand).

Answer 1

decreases, less, contract

increases, more, expand