Name:______date:______period:______(3)
Science 8: Ch 2.1 Tools and Models in Science (pages 42-48)
Key Concept:Scientists use ______and ______to increase their ability to investigate the ______
Define tool
In England, what was the standard for an inch?
The SI units are expressed in multiples of what?
Kilo- means what?
Milli- means what?
What unit is used to describe length?
1 millimeter (mm) is equal to how many meters (m)?
Define mass.
What us the basic SI for mass?
1 kilogram (kg) is equal to how many grams (g)?
If you were measuring an object like a suitcase, would you use kilograms or grams?
If you were measuring an airplane, what unit would you use?
How many kilograms is in a metric ton?
Define volume.
How is liquid volume expressed?
What is a cubic meter?
What is a mL equal to?
What scientific tool is used to measure the volume of a liquid?
How is the volume if a solid usually expressed?
How do you find the volume of a crate?
Define density.
Can you measure density directly?
What is the equation for finding density?
What is the density of an object if its mass is 15g and its volume is 3 cm3?
Define temperature.
What is the SI unit for temperature?
Is the degrees sign o used with the Kelvin scale?
Looking at Figure 2 on page 45, water freezes at
what (oF)?
what (oC)?
Looking at Figure 2 on page 45, water boils at
what (oF)?
what (oC)?
Define model
Why do scientists use models?
What is an example of a physical model?
What is a conceptual model?
What is an example of a conceptual model?
What is a mathematical model?
What is a limitation of models?
How might a scientist use models?
How might scientists use models to understand theories?
How did models help scientists understand how the structure of the atom has changed over time?
Define theory.
Define law.