Mrs. Williams - Unit Test #1

GSCI 2010 - Physical Science for Educators

Scientific Method

1. Question - Testable or not?

2. Hypothesis - Educated guess

3. Experiment - Testing your hypothesis, need to know the materials needed and variables

4. Observe/Record - Qualitative vs.quantitative, record on chart or other method

5. Analyze - Draw conclusions

6. Share Results - Verbally, report, graph, poster, etc

Observation vs. Inference

Observation - a statement describing a fact

Inference - a statement based on an interpretation of facts

K H D U D C M

Kilo, Hecto, Deca, Unit, Deci,

Calculate Speed and Velocity

S = Distance/Time (S = m/s) (V = m/s south)

Mass vs Weight

Mass - how much matter an object contains

Weight - force exerted on a mass by gravity

Newton’s Three Laws of Motion

1. Inertia - object at rest will stay at rest

2. Force = Mass x Acceleration (N)

3. Every action has an equal and opposite reaction

Potential vs. Kinetic Energy

Potential - Stored energy

Kinetic - Energy of motion

Law of Conservation of Energy

Energy cannot be created or destroyed, it can only be transformed

Transfer of Energy

1. Mechanical

2. Electrical

3. Heat

4. Light

5. Sound

6. Nuclear

Heat Transfer

1. Conduction - transfer through a solid

2. Convection - transfer through a liquid or a gas

3. Radiation - transfer through space without touching

Calculate Work

Work = Force x Distance (Joules)

Calculate Acceleration

A = V (F) - V (I)/T (F) - T (I) = (m/s2)

Final Velocity - Initial Velocity/Final Time - Initial Time = Miles per second squared