1. THIRD GRADE Science Week One

2. Scientist’s use attributes to classify objects. What is an attribute?

3. An attribute is a characteristic or a property of an object or living thing

4. Which group, invertebrates or vertebrates, does a snake belong to?

5. vertebrates

6. What two attributes could you use to sort a collection of rocks?

7. size, shape, color, texture, or edges

8. The life cycle of a mealworm has four stages, the egg, larva, __________, and adult. Which stage is missing?

9. pupa

10. What is the correct order of the growth of a bean seed?

11. D, B, A, C

12. What is a testable question?

13. A question in which an experiment is needed to find the answer.

14. Which question is testable? A. What affects the time it takes ice to melt? B. What is water?

15. A. What affects the time it takes ice to melt?

16. Which word prediction or conclusion means an idea of what will happen in the future?

17. prediction

18. 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?

19. a prediction

20. 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?

22. It is a scientific observation.

23. 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?

24. It is an unscientific observation because it is an opinion.

25. What does a beaker, a graduated cylinder and a syringe measure?

26. They measure liquid volume.

27. What tool is this?

28. It is a graduated cylinder?

29. What metric units can you use when measuring the volume of liquids?

30. milliliters (mL) or liters (L)

31. What can you measure with a meter tape?

32. length, height, width and distance

33. What tool is this and what is it used for?

34. Tweezers It is used to pick up small materials.

35. What tools are these and what are they used for?

36. These are beakers and they are used for measuring the volume of liquid.

37. What kind of graph is shown below? Which pet do most kids have?

38. It is a bar graph. fish

39. Ice cubes have been placed in two cups of water at different temperatures. Warm Water ACold Water B 10 cubes4:00pm10 cubes4:00pm 2 cubes4:45pm4 cubes4:45pm Using the table, what conclusion can you make?

40. Ice cubes melt faster in warm water.

41. 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?

42. Measurements may have been read or recorded incorrectly. One child might have taken a sip from the milk carton.

43. Students are taking mock rocks apart with a nail. What safety equipment should they use to protect their eyes?

44. goggles

45. Students were handling crayfish during an investigation. What safety procedures should they follow when they are finished?

46. Students should wash their hands.