
Fall Semester Exam Review
Quiz by TIFFANY SOLOT
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- Q1What is a model?A model is a representation of an object or system30s
- Q2
Which are examples of a physical model?
Mathematical, graph, equation
model car, flower, solar system,
big bang theory, water cycle, nitrogen cycle
30s - Q3Explain why a weather map of the current weather is a mathematical model.
weather is a concept
It use images to represent something real
It uses data to make predictions.30s - Q4
What are some limitations of models?
The model may not behave the same way as the real thing, may not be to scale or the same size, not made of the same material, etc.30s - Q5What two things make a hypothesis valid?testable and supported by evidence
correct statement and supported by evidence
correct and testable
30s - Q6How many milliliters are in 26 liters?
260,000 milliliters
2,600 milliliters
26,000 milliliters30s - Q7How is length measured in SI units?
Kelvin
grams
cm3
meters30s - Q8Explain how the volume of an irregular shaped solid can be determined using a graduated cylinder.Fill the cylinder to a given mark, note the level of water. Add the object and see how much the water rises. The difference between the two marks is the volume of the object.30s
- Q9Define density
density is the volume an object takes up
density it the weight of an object
density is the amount of matter in a given volume30s - Q10What is the equation used for calculating density?Density= Mass/Volume
Density= Weight/Volume
Density=Volume/Mass
30s - Q11What are the units for density?
cm3
g/cm3g/cm
g
30s - Q12
Calculate the density of a piece of rock that has a mass of 42 grams and a volume of 8 cm3
5.25 g/cm30.19 g/cm3
5.25 g/cm
336 g/cm3
30s - Q13True or False: 1mL = 1cm3truefalseTrue or False30s
- Q14Name three types of safety equipment use when dealing with hazardous chemicals.goggles, aprons, gloves
apron, graduated cylinder, gloves
beaker tongs, goggles, splash guard
30s - Q15
The first 2 steps of the Scientific method are observation and state the problem put the remaining steps in order:
Users link answersLinking30s