1) It means to process waste materials so they can be used again a) resources b) recycle c) landfill 2) What does recycling help protect? a) resources b) recycle c) landfill 3) Another name for a dump? a) resources b) recycle c) landfill 4) Which items can be recycled? Choose all applies. a) Metal b) fruits c) glass d) vegetables e) tires f) paper 5) True or False. Everything wears out sooner or later. a) True b) False 6) True or False. Only Glass and aluminum cans cannot be recycled. a) True b) False 7) Why do we need to recycle? a) To east the landfill b) To make our household items like furniture c) It saves resources and energy d) It can create more trash e) It can save the resources 8) Which are easy to recycle? a) Plastics b) aerosol cans c) glass bottles d) aluminum e) paper 9) Which are hard to recycle? a) Plastics b) aerosol cans c) glass bottles d) aluminum e) paper 10) It means how tightly molecules are packed together a) float b) sink c) density d) mass e) weight 11) What can determine if a thing floats? a) float b) sink c) density d) mass e) weight 12) What might a cork do in the water? a) float b) sink c) density d) mass e) weight 13) What might a rock do in the water? a) float b) sink c) density d) mass e) weight 14) Things that are more dense than water ___. a) sink b) float 15) Things that are less dense than water ___. a) sink b) float 16) True or False. Liquids are more dense than solids, but less dense than gases. a) True b) False 17) Less density mean they are ____. a) heavier b) lighter 18) Less density mean they are ____. a) heavier b) lighter 19) True or False. If the density of two liquid is different, they may not mix up together. a) True b) False 20) Which is most dense? a) b) 21) Which is most dense? a) b) 22) Which is most dense? a) b) 23) What are the ways to describe a property? a) tests b) taste c) feel d) think e) look f) smell 24) It is what all materials have that describe how the materials feel, look, etc. a) gas b) liquid c) properties d) solid 25) Property that describes the object to be rough, smooth or hard, soft. a) texture b) size c) weight d) smell e) taste 26) Property that describes the object to be big or small. a) texture b) size c) weight d) smell e) taste 27) Property that describes the object to be light or heavy. a) texture b) size c) weight d) smell e) taste 28) True or False. Properties can help us describe the objects a) True b) False 29) True or False. Properties cannot affect how things are used. a) True b) False 30) It is the word means to stick to each other a) float b) bond c) molecule 31) It is the word means to not sink a) float b) bond c) molecule 32) It is the word means a tiny piece of matter a) float b) bond c) molecule 33) It happens when water molecules stick to each other. a) bonding tension b) breaking molecules c) surface tension d) surface intense e) surface molecules 34) What breaks surface tension? a) water b) molecules c) insects d) soap 35) What state of matter best describes powder? a) gas b) solid c) liquid 36) What state of matter best describes water? a) gas b) solid c) liquid 37) What state of matter best describes air? a) gas b) solid c) liquid 38) Which changes are considered as CHEMICAL change? a) b) c) d) e) f) 39) Which changes are considered as PHYSICAL change? a) b) c) d) e) f) 40) True or False. Changes in matter can only be man-made. a) True b) False 41) Which changes in matter can be NATURAL? a) b) c) d) e) f) 42) Which changes in matter can be MAN-MADE? a) b) c) d) e) f) 43) This law states that an object stays in place unless a force is applied to make it move. When an object is moving, it takes a force to stop it. a) First Law of Motion b) Second Law of Motion c) Third Law of Motion 44) This law states that a moving object may slow down, speed up, or change directions when a force is applied. The object's mass can affect the amount of change. a) First Law of Motion b) Second Law of Motion c) Third Law of Motion 45) This law states that objects move because of forces. A force in one direction causes an equal force in the opposite direction. a) First Law of Motion b) Second Law of Motion c) Third Law of Motion 46) What does Newton's First law explain? a) motion b) force c) mass d) inertia e) action f) reaction 47) "Slowing down" is a change of what? a) motion b) force c) mass d) inertia e) action f) reaction 48) "Slowing down" is a change of what? a) motion b) force c) mass d) inertia e) action f) reaction 49) What can cause a change in motion? a) motion b) force c) mass d) inertia e) action f) reaction 50) What can cause a change in motion? a) motion b) force c) mass d) inertia e) action f) reaction 51) What can affect the amount of change? a) motion b) force c) mass d) inertia e) action f) reaction 52) This is the equal force in the opposite direction. a) motion b) force c) mass d) inertia e) action f) reaction 53) This is the force in one direction. a) motion b) force c) mass d) inertia e) action f) reaction 54) Scientist who wrote about how and why objects move. a) Albert Einstein b) Charles Darwin c) Thomas Edison d) Isaac Newton e) Galileo 55) Select which one shows force being applied. a) b) c) d) e) f) 56) True or False. Objects will not stop moving until there's friction to stop it. a) True b) False 57) True or False. Objects will not move until there's force applied. a) True b) False 58) True or False. All object have no mass. a) True b) False 59) True or False. Heavy objects have less mass therefore less force is needed. a) True b) False 60) True or False. Heavy objects have more mass therefore more force is needed. a) True b) False 61) True or False. Faster objects are harder to stop thus more force is needed. a) True b) False 62) True or False. When you push or pull an object, you can make it go faster or slower or change the object's direction. a) True b) False 63) True or False. You don't need any force to change the direction of an object. a) True b) False 64) Newton's Second Law says that motion can be changed by a ___. a) mass b) position c) thing d) force e) weight 65) Select which shows an action causing a reaction. a) b) c) d) e) f) 66) Newton said, "for every action, there is an equal and opposite ___" a) reaction b) position c) direction 67) What happens when you pedal your bike forward? a) the wheels will push backward against the road thus move the bicycle forward b) the wheels will pull backward against the road thus move the bicycle forward 68) It is a push or pull a) motion b) force c) direction d) mass

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