8th Grade Math
7th Grade Math
8th Grade Science
SR #2
SR #3
100
1.) 5(x-3)+2x = 41
What is x = 8?
100
What is the main difference between an algebraic expression and a numerical expression?
What is an algebraic expression has variables?
100
A student observes actions that occurred in 4 different eggs. Which action describes only a chemical change? A. A cut up egg B. A stirred egg C. A rotting egg D. A dropped egg
What is C ?
100
Which is an example of an intended benefit of a new technology? (a) to make travel faster, (b) to cause air pollution, (c) contaminating the water supply, or (d) making vision worse?
What is (a) to make travel faster?
100
Which tool would you use to compare the masses of two mineral samples? (a) pan balance, (b) hand lens, (c) thermometer, or (d) graduated cylinder?
What is (a) pan balance?
200
Evaluate 6fg , when f=3 and g=5. 5f+3
What is 5?
200
3c less than 2a can be translated to an algebraic expression as
What is 2a - 3c?
200
The equation for destiny is Density = Mass/Volume. Which block would have the greatest density? A. A block with a mass of 9 grams and a volume of 9 cubic centimeters B. A block with a mass of 12 grams and a volume of 4 cubic centimeters C. A block with a mass 120 grams and a volume of 12 cubic centimeters D. A block with a mass 60 grams and a volume of 5 cubic centimeters
What is D?
200
Which choice "best" describes a hypothesis? (a) the result of an experiment, (b) a well-tested explanation for why something happens, (c) a random guess about what causes something, or (d) a possible explanation of an observation or reason
What is (d) a possible explanation of an observation or reason?
200
Which tool would be MOST useful for studying the change of temperature of water as it freezes? (a) pan balance, (b) thermometer, (c) beaker, or (d) microscope?
What is (b) thermometer?
300
If f(x) = 4x-1/5, what is f(4/5)?
What is 3?
300
Adam bought a can of vegetables for $0.75 each. He also had a coupon for $0.25 off per can. What expression can be used to represent the cost of n cans?
What is $0.75n - $0.25n?
300
3. Which of these represents a chemical change? A. A match is lit, creating a yellow-orange flame B. A small piece of ice melts, changing from solid to liquid C. A ball of clay sinks in water, and floats when reshaped D. A pot of water is heated to boiling, and evaporation occurs
What is A?
300
What makes a hypothesis testable? (a) if it is based on accurate observations, (b) if an experiment can be designed to test it, (c) if it contains an opinion that other scientists share, or (d) if it is based on a theory accepted by many scientists
What is (b) if an experiment can be designed to test it?
300
If an engineer finds a flaw or problem in a design, what step should the engineer take next?
What is modify the design to solve the problem?
400
4.) Write the expression in simplest form; 5c-3d-12c+d
What is -7c-2d?
400
Angela baked 10 chocolate chip cookies and 15 sugar cookies. If Angela wanted to find the percentage of sugar cookies baked, which ratio should she use?
What is 15:25?
400
4. A student is to determine how much salt will dissolve in 50 mL of water. Which tool is best for measuring the volume of water to be used? A. 100 mL graduated cylinder B. Thermometer C. Spring Scale D. 25 mL beaker
What is A?
400
Which tools should be used to measure the volume of a fluid? (a) graduated cylinder, (b) pan balance, (c) computer, (d) stopwatch?
What is (a) graduated cylinder?
400
A hypothesis (a) sums up the results of an investigation, (b) is a scientific fact, (c) is a proposed explanation, (d) is a collection of data?
What is (c) is a proposed explanation?
500
Solve -6y+17 = 3y-10
What is y = 3 ?
500
The Archers played two basketball games. The scored x points in the first game. They scored 5 more points in the second game than their first game. What expression shows the total number of points the Archers scored for the two games?
What is 2x + 5?
500
5. Which two items are best to use to determine the combined volume of three small rocks? A. Electric scale and ruler B. Graduated cylinder and water C. Hot plate and beaker D. Meter stick and eye dropper
What is B?
500
A hand lens can be useful for studying (a) the growth of a tree, (b) the behavior of a squirrel, (c) a bird's feather, or (d) the density of a rock.
What is (c) a bird's feather?
500
Which is an unintended consequence of the development of the automobile? (a) faster transportation, (b) increase in available energy, (c) decrease in air pollution, or (d) increase in air pollution?
What is (d) increase in air pollution?
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