others

• comets - "dirty snowballs"
• ice, dust, and rocks - what comets are made up of
• away from the sun - where comets' tails points
• ice and rock - in the nucleus or "head" of a comet
• solar radiation, wind and magnetic field - things comets interact with as they travel through the Solar system
• meteoroid - chunk of rock or metal smaller than an asteroid
• meteor - meteoroid as it burns up the atmosphere
• meteorite - meteoroids that do not completely burn up
• asteroid belt - region between Mars and Jupiter
• asteroids - small, rocky objects that orbit the sun; much smaller than planets
• asteroids - sometimes called minor planets; rocky and airless remnants left over from the early formation of our solar system
• meteors - what you call meteoroids when they enter Earth's atmosphere, or that of another planet, at high speed and burn up
• meteoroids - distinguished as objects significantly smaller than asteroids, ranging in size from grains to objects up  to small asteroids
• more massive - if there is air resistance, which will fall faster, the less or more massive object?
• carbon dioxide and water vapor - in a fire, what produces heat and light
• oxygen - in fire/coal, what gas do you add to remove heat?
• moist hot - in a humidity-temp. graph that goes diagonally upwards, what do you experience, moist hot or dry hot?
• dry hot - in a humidity-temp. graph that starts with a straight line and goes upwards towards the end, what do you experience, moist hot or dry hot?
• the cooler, the more condensation - why does a glass become moist outside when it contains cold beverages ?
• reduce humidity and increase ventilation - how to reduce condensation