Name: Block: Date:
Integrated Science – 1
Jan 2011 Mid-Term Review
1. Definitions and examples of:
a. Independent variable:
b. Dependent variable
2. How can a scientist test a hypothesis?
3. Give an example of a question that can be answered by performing an experiment.
4. Give an example of a question that cannot be answered by performing an experiment.
5. “A measurement is very precise, but it is still not accurate.” Explain how this statement might be
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6. Explain when you would use the following graphs:
a. Bar graph
b. Line graph
c. Pie chart
7. How is the temperature of a substance related to the kinetic energy of the particles in the substance?
8. If you have equal amounts of the same substance in two different containers but the molecules are moving faster in one than the other, what can you say about the temperature of the substance in the container with the faster moving molecules?
9. What happens to most substances as heat is added (their temperature increases)? (Hint: Think of air or metals!)
10. Is warm air more dense or less dense than cold air? (Hint: What was that saying about what hot air does?)
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11. If you put a cold pan into hot water, what will happen to the temperature of the water? What will happen to the temperature of the pan? What would a graph of this look like, A or B?
12. Phases of matter: solid, liquid, gas. How does the state of matter change when a substance:
13. Label the following items on the graph:
a. changes from solid to liquid b. changes from liquid to gas
c. melting d. boiling
e. solid f. liquid
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14. Does heat flow from hotter objects to cooler objects or cooler objects to hotter objects?
16. Why does ice float in water?
17. What does the law of conservation of energy state?
e. Pure substance
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f. Heterogeneous mixture
g. Homogeneous mixture
19. What type of mixture (homogeneous, heterogeneous or immiscible) is made when you
combine the following?
a. 1 spoonful of sugar and I liter of water
b. 10 ml of oil and 50 ml of vinegar
c. lettuce, tomato and cucumber?
a. Valence electrons (and why are they important?)
e. Atomic nucleus: What makes up the nucleus of an atom?
f. Atomic number
h. Mass number
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21. What 2 subatomic particles make up most of the mass of an atom?
22. Do electrons contribute significantly to the mass of an atom?
23. Why does an atom not have a net electrical charge (It is neutral)?
24. What causes a material to have a net charge?
25. Using a Bohr diagram, diagram the following elements:
26. How many electrons are in each of the first 3 energy levels, or shells, of an atom? st 1:
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27.In the modern periodic table, what is the order of elements based on?
28.What do the elements in the same group/family have in common?
29.When an element has only one electron, what is most likely to happen?
30.What is the majority of the periodic table: Metals, nonmetals, metalloids or semiconductors?
31. Name the elements that are in the same family as:
32. Batteries typically have
a. Two positive terminals.
b. One positive terminal and one neutral terminal.
c. One positive terminal and one negative terminal.
d. One negative terminal and one neutral terminal.
33. Draw a working circuit that contains a battery, a paperclip and a light bulb. Be sure to indicate
how the pieces are connected.
34. When do two objects repel each other?
35. When do two objects attract each other?
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36. What is the rate at which charges move through a conductor called?
37. What is the slowing of the movement of charged particles through a substance called?
38. Draw the Ohm’s Law triangle.
39. In the Ohm’s Law triangle, what does the V stand for?
40. In the Ohm’s Law triangle, what does the R stand for?
41. In the Ohm’s Law triangle, what does the I stand for?
42. Two sets of wires are availble to connect a battery to a lightblub. If the first set has a resistance of 6 Ω and the second 8 Ω, which set of wires should be used to light the bulb? Explain your
43. Calculate the amount of current in your fingers if they touch the terminals of a 9 V battery when the resistance of your skin is 600 Ω. Show your work!
44. Calculate the voltage present in a ciruit if the current is 0.10 A and there is a resistance of 180 Ω. Show your work!
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45. Calculate the resistance in a circuit if a 12 volt battery can only produce 0.25 amps of current. Show your work!
b. Give some examples of conductors:
d. Give some examples of insulators:
47. How are current, potential energy, and kinetic energy related?
48.Static electricity is created when you walk across a carpet wearing socks and then touch a doorknob. Explain how the electrons move from your socks and the carpet to the doorknob.
49. Identify and draw parallel and series circuits.
50. What happened when you added more batteries to the circuit in the lab? Why did this happen?
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51. What happened when you added more light bulbs? Why did this happen?
52. When one bulb in a string of lights go out, they all go out. Are the bulbs connected in series or
parellel? Explain how you can tell.
53. How can you tell whether or not the light bulb is on in the picture below?
54. In the diagram above, label the resistor, light bulb, battery, and switch.
55. Give some examples of objects in a circuit that are resistors. (Hint: Think about electrical devices that you use every day!)
56. How does a light bulb light up? In other words, how does electricity create light from a light bulb? Other than light, what else is produced as the light bulb is on?
57. Explain how the nail, wire, and battery created an electromagnet. What influenced how many paper clips you could pick up?
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