Typical athletes take between .16 to .2 seconds to react to the starting signal. What is their average reaction time written in milliseconds? (1s=1000ms)
180 ms (.18/1000)
What is the volume of a water balloon? Select the best estimate. 20 fluid ounces, liters, cups or gallons
20 fluid ounces
What is the temperature of the air on a hot day? Select the better estimate. 36 degrees fahrenheit or celsius
36 degrees celsius
Jude wants to test if he can find two snowflakes that are alike. Which extra accurate lab equipment would be most helpful for his investigation? Super-accurate: stopwatch, weighing scale, thermometer, or camera (explain why)
Super-accurate camera because the snowflakes are more likely to vary visually.
How many seconds are shown? (round to the nearest second)
83 (60+23=83 and 44/100 rounds down)
Our Sun is 864,000 miles in diameter. Write this in Scientific Notation.
8.64 x 10 to the 5 miles in diameter
What is the mass of the Statue of Liberty? Select the best estimate. 225 pounds, kilograms or tons
225 tons
Josh has two solar panels, but he is not sure which panel is not working right. Which extra accurate lab equipment would be most helpful for his investigation? Super-accurate: stopwatch, weighing scale, thermometer, or camera (explain why)
None really, but a Super-accurate thermometer is likely to provide more information than his other options.
How many milliseconds are shown? round to the nearest millisecond (1s = 1000ms)
83,440 ms (60+23)1000+440
What is the volume of a washing machine? Select the best estimate. 132 gallons, liters, fluid ounces or cups
132 liters
Tirian hypothesizes that a broken candy won’t last as long as a whole candy. To test his theory, which extra accurate lab equipment would be most helpful? Super-accurate: stopwatch, weighing scale, thermometer. or camera (explain why)
Super-accurate weighing scale because the test won’t be “fair” if the starting weights are not equal.
What measuring units would be most useful for measuring the length of a mouse? Feet, Inches or Decameters ?
Inches (A large mouse is about 3 inches long)
How accurately can a typical stopwatch measure? (1 x 10 to what power?)
To the hundredth of a second (1 x 10 to the -2)
Convert 10 to the -7 pounds to milligrams & round to the hundredths place (1 lb = .4536 Kg) (1Kg=1000g) (1g=1000mg)
.05 mg (1 lb = 453600 mg so 10 to the -7 lbs = .04536 mg which rounds up to .05) (a grain of salt = .06 mg)
Two friends who weigh 150 lbs are standing 1 meter (3.3 feet) apart. The gravitational force of attraction between the friends is 10 to the -7 pounds. Write this number as a decimal.
.0000001 lbs
What is the average weight of Mice Fuzzies?
4.5 grams (3+6 = 9 and 9/2 = 4.5)
Your found a baby mouse that hops, but is still with it's mom . . . about how many hours old is it?
about 420 hours old (14 - 21 days ~ 17.5 x 24 hours/day = 420)