Name:______________KEY____________________
Class Period:___________
Review for 7th Science 1st Semester Exam 14-15
Directions:
1) Use your 3-ring binder and textbook to complete the REVIEW.
2) Study ALL items on the REVIEW for your semester exam.
3) A completed REVIEW at the start of class on Friday, January 9th will earn
you 10 BOP’s on your Semester Exam.
List the body part that the safety equipment or technique protects.
1. Goggles - Eyes
2. Gloves - Skin
__________________________________________
_______________________________________________
3. Wafting – Nose________________________________________________________
4. No Eating - Gastrointestinal Tract/Stomach
5. Proper Ventilation - Lungs
_______________
____
__________________________________________
Answer the questions.
6. An eyewash station is used primarily for which purpose?
To rinse chemicals that may splash into your eyes.______________________________
7. What can be used to extinguish a fire?
Fire extinguisher, Fire Blanket, or the floor (Stop, Drop, & Roll)
______________
List the items the instrument would measure.
8. Graduated Cylinder – Liquids_____________________________________________
9. Meter Stick – Length or Distance__________________________________________
10. Triple beam balance – Mass____________________________________________
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Answer the questions.
11. In an experiment, what is the variable that you can change?
Independent Variable_____________________________________________________
12. In an experiment, what is the variable being measured?
Dependent Variable
___________________________________________________
13. In an experiment, what is the variable that stays the same through the entire
experiment? Constants____________________________________________________
14. Scientists use their prior knowledge and experience to:
form a hypothesis _______________________________________________________
15. What can be used to analyze data?
Table, chart, or graph ________________________________________________
16. Define Observations:
Bits of information you gather with your senses_________________________________
Identify: Independent Variable, Dependent Variable, & Constant in an experiment.
Label each piece of laboratory equipment.
17.
19.
21.
_____ Beaker ____
18.
___Erlenmeyer Flask__________
____Balance______ 20.
_____Graduated Cylinder_______
______Florence Flask
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Answer the questions.
22. What happens to the temperature in a compost bin during decomposition?
The temperature increases_________________________________________________
Interpret: Be able to interpret graphs.
23. What happens to the organic matter during decomposition?
It is broken down into useful compounds______________________________________
24. What energy transformation occurs as biomass decays in a compost bin?
Chemical to thermal______________________________________________________
25. What materials in a compost bin will be recycled into soil-enriching nutrients?
Biomass: Material from living or recently living organisms Examples: Newspaper, fruit, &
vegetables______________________________________________________________
26. During decomposition, what does the bacteria in the soil do?
It changes nitrogen into a useful form________________________________________
27. Where does a herbivore get it nutrients from in its habitat?
By eating plants that get them from the soil___________________________________
28. In a compost bin, what process leads to the cycling of organic matter?
Decomposition__________________________________________________________
29. What is a tropism?
A plants response to an external stimulus_____________________________________
30. What is the definition of the prefix GEO?
Earth__________________________________________________________________
31. What is the definition of the prefix HYDRO?
Water__________________________________________________________________
32. What is the definition of the prefix PHOTO?
Light__________________________________________________________________
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33. What is the definition of the prefix THIGMO?
Touch__________________________________________________________________
34. What gas do plants release as a result of photosynthesis?
Oxygen________________________________________________________________
35. What energy transformation occurs during photosynthesis?
radiant energy into chemical energy__________________________________________
36. Glucose helps maintain life on our planet by storing what type of energy?
chemical energy_________________________________________________________
37. The diagram provided illustrates the process of photosynthesis, including the
substances used by and produced by plants. What is the identity of the chemical
represented by the question mark in the diagram?
Glucose________________________________________________________________
38. Show how energy flows through a food chain?
Sun » Producers » Herbivores » Carnivores____________________________________
Identify: Producers, Consumers, Herbivores, & Carnivores in a Food Chain or Web.
39. Define Producer:
provides the primary source of energy for all other organisms_____________________
40. Define Consumer:
gains energy by eating other living things_____________________________________
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41. Define Herbivore:
Animals that eat only plants or plant products__________________________________
42. Define Carnivore:
Animals that eat other animals______________________________________________
43. What element is found in all organic compounds?
Carbon________________________________________________________________
44. What is Denitrification?
the process by which bacteria return nitrogen gas to the atmosphere_______________
45. What is the difference between a primary, secondary, and tertiary consumer?
A primary consumer gets their energy by feeding on producers in the food chain,______
secondary consumers get their energy by feeding on primary consumers (herbivores),__
and tertiary consumers get their energy by feeding on secondary consumers._________
Identify: the paths that energy would flow through an ecosystem diagram. An example
of an ecosystem diagram is below.
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46. A diagram is provided. Which portion of the diagram represents the level with the
most available energy?
Producers______________________________________________________________
47. Why are bacteria so important to the nitrogen cycle?
bacteria change the nitrogen into a usable form________________________________
Identify: Using a portion of the Periodic Table or an illustration of chemical compounds
be able to identify if a compound is organic or inorganic.
48. What must a compound contain to be organic?
C Carbon_______________________________________________________________
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49. The table provides information on the function of different digestive structures.
Which of the digestive structures in the table can cause a chemical change to occur?
___Stomach____________________________________________________________
50. What are Carbohydrates made of?
a chain of simple sugars, such as glucose____________________________________
List the smaller molecule that each large molecule is broken down into by digestion.
51. Lipid to Fatty Acid_____________________________________________________
52. Carbohydrate to Sugars________________________________________________
53. Protiens to Amino Acids________________________________________________
54. What is a chemical change?
It involves a change in the identity or chemical composition of a substance.__________
55. List examples of chemical changes during digestion?
Protein is broken down into amino acids in the stomach and Saliva breaking down starch
into carbohydrates_______________________________________________________
56. What is a physical change?
It involves changes to the form of a substance, but not to its chemical identity.
57. List examples of physical changes during digestion?
Teeth chewing food to make it easier to swallow and Food gets squeezed into a different
shape when passing through the esophagus.___________________________________
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58. What are indicators a new substance has been formed?
Gas production, Solid formation, and sometimes color/temperature changes.
59. What is the formula used to calculate work?
Work = Force X Distance___________________________________________________
Three situations in which force is applied to a box are illustrated. Describe what work is
being done in each situation and how they relate to each other.
60. Situations 1: The same amount of work is done in Situations 1 and 3.____________
61. Situation 2: No work is done_____________________________________________
62. Situation 3: The same amount of work is done in Situations 1 and 3._____________
63. When an object is lifted directly from the ground rather than moved with an inclined
plane, what will be increased?
The force needed to move the object_________________________________________
64. No work is said to be done in a situation where a force is applied to an object &
the object does not move__________________________________________________
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List examples of these Simple Machines
65. Inclined Plane: Ramp, ladders, stairs_____________________________________
66. Wedge: Axe Head, staple, door stop______________________________________
67. Screw: Screw, jar lid, drill, bolt _________________________________
68. Wheel and Axle: Bike wheel, electric fan, merry go round____________________
69. Lever: Crowbar, door handle, light switches, hinges_______________________
Answer the questions.
70. Define Newton’s 1st Law: “Law of Inertia”- objects in motion stay in motion, objects
at rest stay at rest, unless acted on by an unbalanced force.______________________
71. Define Newton’s 2nd Law: “Law of Force” - Force= Mass x Acceleration__________
______________________________________________________________________
72. Define Newton’s 3rd Law: “Law of Action-Reaction” - For every action, there is an
equal but opposite reaction._______________________________________________
73. Animals can move as a result of what energy conversion?
Chemical Energy » Mechanical Energy_______________________________________
74. What happens to the energy obtained by an organism when it consumes food?
It is transformed into other forms of energy__________________________________
75. Mammals maintain their body temperature as a result of what energy conversion?
Chemical Energy » Thermal Energy_________________________________________
76. Define Turgor Pressure:
Force of water molecules against the cell wall that allows plants to stand up straight.
77. When a plant performs photosynthesis, the radiant energy of the Sun is stored as
what type of energy?
Chemical Energy________________________________________________________
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Describe the types of energy.
78. Radiant: Energy from the sun __________________________________________
79. Chemical: Energy stored in the bonds of molecules_________________________
80. Mechanical: Energy of motion or position_________________________________
81. Electrical: Energy carried by the flow of an electric current___________________
82. Define Diffusion:
the movement of particles from areas of high concentration to areas of low_________
concentration. This process rids the cell of waste products and brings nutrients into
the cell._______________________________________________________________
Interpret Diagrams of Osmosis. Be able to identify the direction in which water
molecules will move.
83. Define Atom:
The smallest particle of an element maintaining the chemical identity of that element___
84. Define Compound:
A pure substance made of two or more kinds of atoms bound together_______________
85. Define Element:
A pure substance composed of the same type of atom throughout__________________
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