Science Test 2 Flashcards
What are the seven steps of the scientific Method?
- Make observations
- State a Problem
- Research
- Form a Hypothesis
- Test your Hypothesis
- Draw a Conclusion
- Share your Results
What is a Hypothesis?
A hypothesis is an educated guess
What is a Variable?
A variable is the factor being tested
What is a Control?
A control is the group that lacks the variable
Why do we use the Metric System?
It is used worldwide and it is easier to convert
Abbreviate each prefix:
1. Kilo:
2. Deca:
3. Centi:
- K
- Da
- C
What is the prefix for the examples below?
1. H
2. D
3. M
- Hecto
- Deci
- Milli
What prefix corresponds with these values?
1. 100
2. 0.01
3. 10
- Hecto
- Centi
- Deca
What values do these prefixes have?
1. Deci
2. Kilo
3. Milli
- 0.1
- 1000
- 0.001
What tools do you use to measure…
1. Length of pen
2. Mass of pen
3. Volume of pen cap
- Metric Ruler
- Balance
- Granulated Cylinder
What unit do you use for…
1. Length
2. Mass
3. Volume
4. Temperature
- Meters
- Grams
- Liters
- Degrees Celsius
What does each of the abbreviations stand for?
1. km
2. dL
3. mg
- kilometers
- deciliters
- milligrams
What does each on abbreviated look like?
1. hectoliters
2. decagrams
3. centimeters
- hL
- dag
- cm
Metric conversion:
12.358 dm = _________ km
0.0012358 km
Metric conversion:
64.28 hg = __________ dag
642.8 dag
Metric conversion:
4590 mm = __________ m
4.59 m
What temperature does water freeze? (Both Fahrenheit and Celsius)
0 degrees Celsius
32 degrees Fahrenheit
What temperature does water boil? (Both Fahrenheit and Celsius)
100 degrees Celsius
212 degrees Fahrenheit
What is Length?
Length is the distance between two points
What is Mass?
Mass is the amount of matter in an object
What is Volume?
Volume is how much space a thing occupies.
What is Weight?
Weight is the attraction between objects due to gravity.
What is Temperature?
Temperature is the average kinetic energy of particles in a sample of matter. (How hot or cold something is)
What is Density?
Density is the amount of mass per unit volume
Density Problem:
What is the density of a cube that has a mass of 128 grams and it has a side length of 4 centimeters?
2 g/cubic centimeters
Density Problem:
If there are 25 mL of a liquid and its mass is 100 g, what is its density?
4 g/mL
Density Problem: Cube one has a mass of 14.5 g. Cube two has a mass of 10.95 g. If both cubes have a volume of 5 cubic centimeters, which one is more dense?
Cube one is more dense.
1 cubic cm of water = ____ mL = ____ g?
1 mL and 1 g
True or False: Is the Metric system a base 10 system?
True
