1) Wood is considered as which energy resource: a) Coal b) Biomass c) Geothermal d) Petroleum 2) Which energy source uses the kinetic energy from falling water? a) Geothermal b) Hydroelectric c) Biomass.  d) Solar energy 3) A simple electrical component that opens and closes the electrical unit is a) Battery b) Switch c) Bulb d) Wire 4) Christmas tree lights are often connected in series. This is not a good idea because a) They use more energy b) They aren't colorful c) If one light breaks they all go out d) There isn't a complete circuit 5) The nucleus a) Is made up of protons and neutrons.  b) Orbits the center proton c) Is the coldest point in the atom d) Surrounds the atom 6) Which is smaller than an atom? a) Subatomic Particles b) Compounds c) Molecules.  d) None of the above 7) What charge does a proton have? a) No charge  b) Positive charge  c) Negative charge  d) Either a positive or negative charge 8) The majority of an atom’s mass exists a) In the nucleus  b) In the electron cloud  c) In the space between the nucleus and the electrons  d) In the neutrons 9) Which of the following describes a parallel circuit? a) All bulbs light up together b) If one bulb breaks the circuit is broken c) Current flows along each branch d) None of these 10) When your skin is wet, electricity can pass through you a) Easily b) Hardly c) Both of these d) None of these 11) Which of the following is NOT a renewable resource? a) Trees b) Wind c) Solar d) Uranium (Nuclear) 12) What is one disadvantage of burning coal? a) Coal produces air pollution. b) There isn't a lot of coal left which makes it expensive. c) The world isn't using a lot of coal which makes it an undesirable job. d) You can only use it to roast hot dogs and cook hamburgers 13) C is the chemical symbol for: a) Calcium b) Carbon c) Chlorine d) Chromium 14) A______________ is formed when two or more elements are chemically combined. a) Element b) Compound c) Mixture d) None of these 15) If a drink container tells you to "SHAKE WELL" before drinking, the mixture in the container is most likely a: a) Solution b) Compound c) Colloid d) Element 16) A fruit salad is an example of a) Element b) Mixture c) Compound d) None of these 17) A solution is heated until the liquid becomes a gas. This process is called ________________. a) Settling  b) Distillation c) Filtration d) Evaporation 18) Sand mixed in water makes a sand solution. The process used to separate sand from sand solution is called__________. a) Filteration b) Suspension c) Evaporation d) Condensation 19) In sweetened tea, the sugar is called a ______________. a) Solute b) Solution c) Solvent d) None of these 20) Chemical symbol of sodium is _______________. a) Na b) Ni c) S d) So 21) A long tube that carries food from the mouth to the stomach ________________. a) Trachea.  b) Esophagus c) Urethra d) Blood vessel 22) ____________________ stores the liver’s digestive juices. a) Pancreas b) Gall bladder c) Villi d) Intestine 23) The place where digested molecules of water and minerals get absorbed is _______________. a) Small intestine b) Large intestine c) Rectum d) Pancreas 24) Which of the following is a grain? a) Apple b) Bread c) Rice d) Broccolli 25) What is the main purpose of carbohydrates for the body? a) They provide chemicals to help repair cells and aid in digestion. b) They help regulate hormones and body temperature within the body. c) They are the main source of energy for the body. d) They control chemical reactions in the body 26) While many greenhouse gases occur naturally and are needed to create the greenhouse effect that keeps the Earth warm enough to support life ____________is the main source of excess greenhouse gases in the atmosphere. a) Deforestation b) Farming c) Human use renewable energy resources d) Population growth 27) Petroleum, coal and natural gas are all ______________________. a) Environmentally friendly b) Non-polluting c) Renewable d) Fossil fuels 28) Which food chain correctly describes the flow of energy in an ecosystem? a) Grass-->cow-->human b) Caterpillar-->leaf-->human c) Cow-->grass-->human d) Leaf-->bird-->caterpillar 29) Which of the following lists only consumers? a) Hawks, lizards, fox b) Acorns, squirrels, rabbits c) Grass, chipmunks, eagles d) Mice, squirrels, grass 30) What is the main energy transfer in an electric iron? a) Light to electrical b) Heat to light c) Electrical to heat d) Electrical to light

Science Quiz 6th

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