Scientific Method
Observing, formulating hypotheses, testing, and theorizing are the four major stages of the ________ _________. (Two word answer)
Scientific Method
Name the SI base unit for mass.
Kilogram (kg).
A conversion factor is always a ratio equal to what number?
1
How many significant figures are in the number 0.0067?
2
What is the largest ocean in the world?
The Pacific Ocean
This type of data is descriptive rather than numerical — for example, “the solution turned blue.
Qualitative data.
What SI prefix represents 0.001 (one-thousandth)?
milli-
Convert 3.5 km to meters.
3,500 m
True or False: Trailing zeros with no decimal point are always significant.
False.
What is Superman's real name (hint: NOT Clark Kent)
Kal-El
This term describes a testable statement that serves as the basis for predictions and further experiments.
A hypothesis.
Give the formula for density.
Density = mass ÷ volume (D = m/V).
Convert 10 inches to centimeters. (1 inch = 2.54 cm)
25.4 cm
A student measures a sample's mass as 8.6 g. The accepted value is 9.0 g. Calculate the percentage error.
(8.6 − 9.0) ÷ 9.0 × 100 = −4.4%
Which actor voiced Darth Vader in Star Wars and Mufasa in the Lion King?
James Earl Jones
Divide and express your answer in scientific notation: (8.4 × 10⁶) ÷ (2.1 × 10²)
4.0 × 10⁴
A sample has a mass of 15.6 g and a volume of 4.2 mL. Calculate its density to the correct number of significant figures.
15.6 ÷ 4.2 = 3.7 g/mL (2 sig figs).
Convert 50°F to Celsius.
10°C
Add the following measurements and round to the correct number of decimal places: 12.5 + 3.42
12.5 + 3.42 = 15.92 → round to 15.9 (1 decimal place, matching 12.5).
Who in the world has the most followers on Instagram?
Cristiano Ronaldo.
Add, and express your answer in scientific notation: 3.2 × 10⁴ + 2.5 × 10³
3.45 × 10⁴
A liquid has a density of 0.79 g/mL. What is the mass of 35 mL of the liquid, to the correct number of significant figures?
0.79 × 35 = 27.65 → 28 g (2 sig figs).
Convert 20 miles/hour to km/hour. (1 mi = 1.61 km)
32.2 km/hr
Perform the following calculation and round to the correct number of significant figures: (3.26 × 5.1) ÷ 2.0
3.26 × 5.1 = 16.626; 16.626 ÷ 2.0 = 8.313 → round to 8.3 (2 sig figs).
How many total toes does a cat normally have?
18 total (10 on it's front paws and 8 on it's back.)