third grade science week one. scientist’s use attributes to classify objects. what is an...
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THIRD GRADE
Science Week One
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•Scientist’s use attributes to classify objects. What is an attribute?
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•An attribute is a characteristic or a property of an object or living thing
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•Which group, invertebrates or vertebrates, does a snake belong to?
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•vertebrates
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•What two attributes could you use to sort a collection of rocks?
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•size, shape, color, texture, or edges
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• The life cycle of a mealworm has four stages, the egg, larva, __________ , and adult. Which stage is missing?
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•pupa
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What is the correct order of the growth of a bean seed?
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D, B, A, C
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•What is a testable question?
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•A question in which an experiment is needed to find the answer.
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•Which question is testable?
A. What affects the time it takes ice to melt?
B. What is water?
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A. What affects the time it takes ice to melt?
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•Which word prediction or conclusion means an idea of what will happen in the future?
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•prediction
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• Your class is investigating the speed of water drops on a slope. You think the steeper the slope the greater the speed. What have you just made?
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•a prediction
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• Kathleen writes the following observation in her science notebook: My rabbit is black, has four legs, and feels soft. Is that a scientific observation or an unscientific observation?
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Kathleen writes the following observation in her science notebook: My rabbit is black, has four legs, and feels soft. Is that a scientific observation or an unscientific observation?
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•It is a scientific observation.
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• Kathleen also wrote in her science notebook that the rabbit is a sweet and happy bunny. Is that a scientific observation or an unscientific observation? Why?
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•It is an unscientific observation because it is an opinion.
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•What does a beaker, a graduated cylinder and a syringe measure?
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•They measure liquid volume.
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What tool is this?
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It is a graduat
ed cylinder
?
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• What metric units can you use when measuring the volume of liquids?
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•milliliters (mL) or liters (L)
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•What can you measure with a meter tape?
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•length, height, width and distance
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What tool is this and what is it used for?
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• Tweezers • It is used to pick up small materials.
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What tools are these and what are
they used for?
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•These are beakers and they are used for measuring the volume of liquid.
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What kind of graph is shown
below? Which pet do most kids
have?
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•It is a bar graph.
•fish
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Ice cubes have been placed in two cups of
water at different temperatures.
Warm Water A
Cold Water B
10 cubes 4:00pm 10 cubes 4:00pm
2 cubes 4:45pm 4 cubes 4:45pm
Using the table, what conclusion can
you make?
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•Ice cubes melt faster in warm water.
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• Two students were measuring the volume of milk in their milk cartons from lunch. They both used a graduated cylinder but didn’t get the same answer. What could have happened to cause a difference in their results?
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• Measurements may have been read or recorded incorrectly.
• One child might have taken a sip from the milk carton.
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• Students are taking mock rocks apart with a nail. What safety equipment should they use to protect their eyes?
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•goggles
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• Students were handling crayfish during an investigation. What safety procedures should they follow when they are finished?
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•Students should wash their hands.