2. From RegentsEarth.com

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5. Back What term describes the amount of matter in an object? Ques. #1 Mass Ans.

6. What term describes the amount of space occupied by an object? Back Ques. #2 Ans. Volume

7. In order to make an observation what MUST the observer use? Back Ques. #3 Ans. The senses

8. A conclusion based on observations is called an………………. Back Ques. #4 Ans. Inference

9. Grouping things according to common properties is known as……………….. Back Ques. #5 Ans. Classification

10. What do scientists use to extend their senses? Back Ques. #6 Instruments Ans.

11. At what temperature does water reach maximum density? Back Ques. #7 Ans. 4°C

12. In which phase of matter do most materials have minimum density? Back Ques. #8 Ans. Gas

13. If the mass of an object is 250g and the volume is 25cm 3, what is the density? Back Ques. #9 Ans. 10g/cm 3

14. An object has a density of 8g/cm 3. It is cut into 4 identical pieces. What is the density of each piece? Ques. #10 Back Ans. 8g/cm 3

15. The boundary between two different materials is called an........................ Back Ques. #11 Ans. Interface

16. All changes in the environment can be described in terms of two variables. What are they? Back Ques. #12 Ans. Time and space (distance)

17. Changes which occur in a regular, repeating pattern are referred to as........... Back Ques. #13 Ans. Cyclic

18. Give an example of a naturally occurring non-cyclic event. Back Ques. #14 Ans. Volcano, earthquake, asteroid impact, etc

19. Give an example of a naturally occurring cyclic event. Back Ques. #15 Ans. Tides, seasons, orbits of planets or moons, etc

20. What is the mass of this object? Back Ques. #16 Ans. 32.4g (12x2.7)

21. What is the volume of this cube? Back Ques. #17 Ans. 10.6cm 3 (2.2 x 2.2 x 2.2)

22. What kind of relationship is shown by this graph? Back Ques. #18 Ans. Direct

23. A sample of a substance has a mass of 36g and a volume of 4.5cm 3. What is the mass of another sample of the same material whose volume is 18.0cm 3 ? Back Ques. #19 Ans. 144g

24. Back Ques. #20 Ans. 2°C /min What is the rate of temperature change for the sample of lead from 2 minutes to 8 minutes?

25. What statement is true about the density of both objects I and II in the diagram? Back Ques. #21 Ans. Their density is less than 1g/cm 3 (they both float)

26. What kind of event is recorded in the graph above? Back Ques. #22 Ans. Cyclic

27. An object measures 3cm x 5cm x 4cm and has a density of 2.5g/cm 3. What is the mass of this object? Back Ques. #23 Ans. 150g (M=DV)

28. What is the volume of the ball in cm 3 ? Back Ques. #24 Ans. 25 cm 3 (65 - 40 = 25)

29. What is the density of the ball if its mass is 75g? Back Ques. #25 Ans. 3g/cm 3 (75g/25cm 3 )

30. A sample of material has a mass of 234.2g and a density of 13.7g/cm 3. A second sample of the same material has a mass of 562.8g. What is the density of the second sample? Back Ques. #26 Ans. 13.7g/cm 3

31. What is the density? Back Ques. #27 Ans. 6g/cm 3

32. What kind of relationship is illustrated by the graph? Back Ques. #28 Ans. Inverse

33. When energy is exchanged it is always exchanged at an................... Back Ques. #29 Ans. Interface

34. What would happen if these two objects were placed in water? Back Ques. #30 Ans. ‘A’ would float and ‘B’ would sink

35. YOU’RE A WINNER! If mass is 25g and volume is 5cm 3, what is the density? Density = 5g/cm 3