Rocks moved farther by erosion are usually ____________. * smaller brighter larger darker At the atomic level, heat causes atoms and molecules to ________. * collide less freeze stop vibrate The liquid inside of thermometers is called ________. * mockery mercury muckery monkey What is one kind of renewable energy? * Fossil fuels Coal Nuclear Wind Heat gain usually causes materials to ________. * contract break apart expand stay the same What is the correct order of the following steps in the rock cycle? * Hình ảnh không có chú thích iii, ii, i i, iii, ii iii, i, ii i, ii, iii Which of the following is biodegradable? Plastic Glass Paper Aluminum cans Forests are cleared on a large scale during _______, but can be planted again is a process called _______. * reforestation ; deforestation deforestation ; reforestation biodegradable ; soil erosion soil erosion ; biodegradable Which method of heat transfer is responsible for causing clouds, precipitation, and thunderstorms? * Radiation Conduction Convection None of the above Which of the following is a cause of weathering? * Wind Rain Acid All of the above Materials that do NOT radiate and absorb heat very well are often ________. * silvery and shiny dark and dull small big Lustre is a measure of how _______ something is. * massive round hard shiny _______ is formed when molten rock cools and hardens into a solid. * Metamorphic rock Space rock Igneous rock Sedimentary rock Air pollution can cause damage to our ________. * lungs environment brains All of the above Greenhouse gases cause the Earth to _______. * cool down heat up become wetter become drier