Identifying Variables
A scientist tests how the amount of sunlight affects plant growth. She gives one group of plants full sunlight, another partial sunlight, and another no sunlight. The amount of sunlight is this type of variable.
What is the independent variable.
If your dart hits the bullseye once but your other darts are scattered far apart, you have this.
What is accuracy without precision?
0.001450 has this many significant figures.
What is four?
1.00cm+2.1cm is reported as this.
What is 3.1cm?
620,000 is expressed as this in scientific notation.
What is 6.2 x 10^5?
In the same experiment, the scientist measures the height of the plants after two weeks. The height of the plants is this type of variable.
What is dependent variable?
A student measures the density of a metal three times and gets 8.5 g/ml, 8.6 g/ml, and 8.5 g/ml. The actual value is 7.9 g/ml. The student's data shows this quality.
What is precision without accuracy?
1.0000 has this many significant figures
What is five significant figures?
26.943g / 4.0 is reported as this.
What is 6.7g?
0.0000021 is expressed as this in scientific notation.
What is 2.1 x 10^-6?
The scientist makes sure all plants are the same species, watered the same amount, and grown in the same soil. These unchanged conditions are known as this.
What are constants?
A lab group measures the boiling point of water and records values of 99.9 degrees Celsius, 100.0 degrees Celsius, and 100.1 degrees Celsius. Their results demonstrate both of these.
What are accuracy and precision?
Round 657,982 to two significant figures.
What is 660,000?
This is how adding and subtracting with significant figures differs from multiplying and dividing with significant figures.
What is adding and subtracting takes the least amount of significant figures behind the decimal, while multiplication and division considers the least amount of significant figures in the least precise measurment?
17 years is converted to this many seconds.
The group of plants that receives no sunlight is used for comparison. This group is known as this.
What is the control group?
The formula for density is known as this.
What is density = mass over volume?
0.00214590 rounded to three significant figures is this.
What is 0.00215?
This is 4.2876in / 0.00240 rounded to the appropriate amount of significant figures.
What is 1,790in?
26mph converted to feet/min is this.
What is 2300 ft/min?
A researcher tests if temperature affects how fast sugar dissolves in water. She uses the same type of sugar, the same amount of water, and the same size cup each time. The temperature of the water is this type of variable.
What is the independent variable?
A student measures a block of metal with a mass of 45.0 grams and a volume of 15.0 mL. The density of the block is this.
What is 3.00 g/mL?
A student multiplies 0.004560 x 23.1. According to the rules of significant figures, how many sig figs should the final answer have?
What is 3 significant figures?
1.04123+5+6.623578 is rounded to this.
What is 13?
If there are 33.8 ounces in one liter, convert the density of water (1.00kg/L) to kilogram/ounces.
What is 0.0296kg/oz?