|
A. Mechanics
|
1. Describe the motion of objects using distance traveled, time, direction, and speed.
|
a. Observe, describe, and compare types of motion.
- Uniform motion as equal distances traveled in equal times, such as escalators, conveyor belts.
- Variable motion as different distances traveled in equal times, such as an accelerating car, falling objects.
- Periodic motion as motion that repeats itself, such as a child on a swing, a person on a pogo stick.
|
b. Use measurements to describe the distance traveled as the change in position.
|
c. Based on data describe speed as the distance traveled per unit of time.
|
2. Explain that the changes in the motion of objects are determined by the mass of an object and the amount (size) of the force applied to it.
|
a. Observe and give examples that show changes in speed or direction of motion are caused by an interaction of forces acting on an object:
|
b. Observe and explain the changes in selected motion patterns using the relationship between force and mass.
|
4. Cite evidence that energy in various forms exists in mechanical systems.
|
a. Identify ways of storing energy (potential) in an object.
- Raising an object above the ground
- Putting it on the end of a compressed or extended spring or rubber band
|
b. Identify that an object has energy (kinetic) related to its motion.
|
c. Observe and cite examples showing that stored energy may be converted to energy of motion and vice versa.
|
|
B. Thermodynamics
|
|
C. Electricity and Magnetism
|
|
D. Wave Interactions
|
3. Provide evidence to show that light travels in a straight line until it is reflected or refracted.
|
a. Observe and describe the images formed by a plane mirror.
|
b. Based on observations trace the path of a ray of light before and after it is reflected (bounces) off a plane mirror.
|
c. Observe and describe that a ray of light changes direction when it crosses the boundary between two materials such as air and water or air to glass.
|
4. Recognize and describe how light interacts with different materials.
|
a. Classify materials as translucent, transparent or opaque.
|
b. Explain that shadows are formed when objects block light.
|
c. Observe and describe that prisms separate white light into its component colors.
|
d. Pose questions about why objects appear to be different colors.
|