Vocabulary
Define Variable.
Anything that you can change in an experiment that might affect the results.
Fill in the blank:
1. Make an ___________.
Observation
Define Controlled Experiment.
An experiment in which one, and only one, variable is changed.
What is the formula for density.
Density = Mass divided by Volume
How do you find the volume of an irregular shape?
Use the water displacement method
Define Prediction.
An estimate based on information or experiences.
2. Ask ________ based on observations.
Questions
One
What is the formula for volume.
Volume = length times width times height
A solid is 2cm tall, 4cm wide, and 6 cm thick. What is its volume?
48cm3
Define Capacity.
The amount of fluid an object can hold.
3. State a ________ or answer a question.
Hypothesis
Describe the relationship between capacity and number of passengers our lifeboats held.
The great the capacity the more passengers the boat will hold.
An object has a mass of 8 grams and a volume of 2 milliliters. What is its density?
4 g/mL
A solid is 5 cm tall, 3 cm wide, and 2 cm thick. It has a mass of 120 g. What it its density?
4 g/mL
Define Experiment.
An investigation designed to find out how variables affect the outcome.
4._________ the hypothesis by conducting an _________.
Test & Experiment
What variables affected the number of pennies needed to sink our lifeboats?
1. The capacity of size of the boat.
2. Where we placed the pennies.
3. How we placed the pennies.
4. The condition of the water.
An object has a density of 10g/mL and a volume of 2 mL. What is its mass?
20 grams
Describe the water displacement method.
Fill a graduated cylinder to a set amount such as 20mL. Place your irregular shape into the graduated cylinder and record the new measurement. Subtract the original measurement from the new measurement. Your result is the volume of the irregular object.
Define Scientific Inquiry.
The process of finding answers to scientific questions.
5. ___________ the results and _____________.
6. ___________ the results.
Observe & Draw Conclusions
Communicate
How can we determine if something will float or sink in water?
Determine its density. If the density is greater than water (1.0 g/mL) then it will sink. If the density is less than water then it will float.
An object has a density of 6g/mL and a mass of 12 grams. What is its volume?
2mL
A solid is 3 cm tall, 6 cm wide, and 9 cm thick. It has a mass of 324 grams. What is its density?
2 g/mL