Blinding Me With Science
This goes on the x-axis
Independent Variable
What is the SI for time?
Second (s)
Convert 34.56 cm to meters
0.3456 m
MUST HAVE UNITS!!!
What is the speed of a car that drove 120 km in 2 h?
60 km/h
MUST HAVE THE 4 POINTS!!!
What is the equation for density?
density = mass/volume
A statement about what happens in nature that seems to be true ALL the time
Scientific Law
Which is not a measurement of temperature?
Fahrenheit
Celsius
Kelvin
Newtons
Newtons
Convert 1.23 km to meters
1230 m
MUST HAVE UNITS!!!
What is the rate of change in velocity?
Acceleration
What is how far an object has move from its starting position?
Displacement
NEVER changes in an experiment
Constant
Which is not a base unit?
grams
liters
feet
seconds
feet
Convert 123.4 cm3 to mL
123.4 mL
MUST HAVE UNITS!!!
Which has more momentum?
A 15 kg mass moving 4 m/s or an 8 kg mass moving 10 m/s?
8 kg mass moving 10 m/s
What is a scientist's favorite holiday decoration?
A chemistree
What is a scientific theory?
An explanation (of things or events) based on (knowledge gained from) many observations and investigations
(not required in answer)
Required in answer
Calculate the volume of a .231 kg object with a density of 5.79 g/mL
39.9 mL
MUST HAVE THE 4 POINTS!!!
Which of the following conversions is correct?
123.4 m = 0.1234 cm
123.4 cL = 12.34 mL
12.34 g = 12340 mg
1.23 kL = 1234 mL
12.34 g = 12340 mg
Calculate the mass of an object with a momentum of 40 kg*m/s and a velocity of 1.25 m/s
32 kg
MUST HAVE THE 4 POINTS!!!
When do we come back from winter break?
Jan. 8
A NEW ITCHING POWDER IS OUT! But pranksters all over are wandering: does it really last longer like the company claims? To test this claim, two groups of 20 were used. One group had 2 grams of the regular itching powder sprinkled on them and the other group had 2 grams of the new itching powder sprinkled on them. After an hour, group 1 reported itching for 15 minutes, and group 2 reported itching for 45 minutes. Identify the independent and dependent variables, a constant, and the control.
IV: Powder
DV: Itching time
Constant: 20 per group, time, amount of powder
Control: Old powder
In the scales of temperature, what is the freezing and boiling point of water in Celsius and Kelvin? Make sure you identify which is freezing and which is boiling!
Freezing - 0oC 273 K
Boiling - 100oC 373 K
MUST HAVE UNITS!!!
A 398.1 g object has a momentum of 72.2 kg*m/s. What is the velocity of the object?
181.4 m/s
MUST HAVE THE 4 POINTS!!!
DOUBLE JEOPARDY!!! Worth x2 the points!!!
If a car drives 20 km east then 20 km west in 1 hour, what is the speed and velocity for the car?
Speed: 40 km/h
Velocity: 0 km/h (remember, the "d" in velocity is displacement!)
FINISH IT!!!
STOP!
-Collaborate and listen!
-In the name of love!
-Hammer time!