The Sun can best be described as — A.) an icy planet B.) a ball of superheated gases C.) a cloud of dust D.) a burned-out star L B.) a ball of superheated gas F

Which two planets are closest to Saturn? A.) Jupiter & Uranus B.) Venus & Earth C.) Mars & MercuryD.) Mercury & Neptune LF A.) Jupiter & Uranus

The diagram below shows water being heated in a container. What process is taking place? A.) boiling B.) melting C.) freezingD.) condensation L A.) boiling F

A piece of solid matter is heated. It is something that cannot burn. What will eventually happen to this matter if its temperature continues to increase? A.) It will freeze B.) It will dissolve in water C.) It will meltD.) It will explode L C,) It will melt F

Which of the following characteristics of Earth is also found on the Moon? A.) Life-supporting soil B.) Atomosphere C.) Water D.) Gravity L F

Which provides an example of thermal energy? A.) a turkey being roasted in the oven on Thanksgiving B.) a ball falling to the ground C.) Light from the Sun being reflected by the Moon D.) wind blowing a sailboat across a mountain lake L A.) a turkey being roasted in the oven on Thanksgiving F

Which demonstrates the use of mechanical energy? A.) An air conditioner cools a hot apartment in July B.) A new light bulb makes it easier to read a night C.) New speakers make computer games more exciting D.) Furniture is carried by movers into a new house L D.) Furniture is carried by movers into a new house F

Which is the correct order of development for this frog? A.) 4, 2, 3, 1 B.) 2, 1, 4, 3 C.) 3, 1, 4, 2D.) 2, 4, 1, 3 L F

What is the melting point of ice on the Celsius scale? A.) -32 º C B.) 0 º C C.) 32 º C D.) 212º C L B.) 0 º C F

How do the trees in the rainforest obtain their energy? A.) By eating other plant life B.) By using energy from the Sun C.) By drinking water through their roots D.) By absorbing heat from the forest floor L B.) By using energy from the Sun F

How is coal formed? A.) People burn wood to make coal B.) Farmers use biofuels to produce coal C.) The soft bodies of ancient sea animals & plants turn to liquid D.) The remains of plants in ancient swamps were buried and turned to coal L D.) The remains of plants in ancient swamps were buried and turned to coal F

What causes day and night to occur on Earth? A.) The Sun revolves around Earth B.) The Moon’s shadow causes night on Earth C.) Earth rotates on its axis D.) Earth revolves around the Sun L C.) Earth rotates on its axis F

Which practice uses a nonrenewable source of energy? A.) harvesting trees in a rainforest B.) burning coal to generate electricity in a power plant C.) using steam from below Earth’s surface to turn a turbine D.) building a dam to use falling water to generate electricity L B.) burning coal to generate electricity in a power plant F

What is the original source of energy in this ecosystem? A.) grass & twigs B.) the Sun C.) the burning of fossil fuels by humans D.) nutrients in the soil left by decomposers L B.) the Sun F

Field mice learn some behaviors while interacting with the environment. Which behavior is most likely learned? A.) Drinking waterB.) Running fast C.) Avoiding humans D.) Sleeping during the day L C.) Avoiding humans F

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