Lesson 1 Circuit of Inquiries-A Preassessment

LESSON 1 CIRCUIT OF INQUIRIES-A PREASSESSMENT

Name:______Date: _

Class: ______

Student Sheet 1

What We Observe About Energy, Machines, and Motion

Directions Describe your observations in the space provided. Use complete sentences.

Inquiry 1.1: The Single Pulley

1. What happened when you pulled on the pulley's string?

2. Describe another situation where pulleys are used.

Inquiry 1.2: The Pegboard Lever

1. Draw a diagram showing the washers and the balanced lever.

2. Draw a diagram of your new arrangement.

3. What besides the washers did you change to balance the lever?

4. Write down something else you can balance.

Inquiry 1.3: The Hand Warmer

1. What was the temperature when the thermometer was between your hands?

2. What happens to the temperature when you rub your hands together?

3. Write down another example of how you can produce heat.

Inquiry 1.4: Constructing a Graph

1. Using the measurements in Table 1, draw a graph of the distance the bowling ball travels over time.

Table 1 Distance the Bowling Ball Traveled Over Time

Time / Distance
(seconds) / (meters)
5 / 15
10 / 25
15 / 30

Title: Distance the BowlinJ! Ball Traveled Over Time

2. What does this graph show about the bowling ball's motion?

Inquiry 1.5: Transforming Energy

1. Describe what happens when you move the generator (motor) shaft back and forth over the stretched rubber band.

2. What energy transformations are taking place?

3. Give an example of another way to generate electricity.

Inquiry 1.6: The Puck Launcher

1. Describe the puck's motion when you pull the rubber band back 2.0 cm and release it.

2. Describe the puck's motion when you pull the rubber band back 4.0 cm and release it.

3. What force acts on the puck each time?

4. Describe how the puck's motion is different and how it is the same in the two trials.

5. Give an example of a force that acts on an object. What is the force's effect?

Inquiry 1.7: Up the Incline

1. Describe the size of the force when you lift the mass directly onto the books.

2. Describe the size of the force when you pull the mass up the incline.

3. How do the force- sizes-lifting the mass and pulling the mass up the incline-compare?

4. Describe another situation where people use inclined planes.

Inquiry 1.8: Down the Ramp

1. Describe your observations of the car's motion when it is released at the ramp's high end (Position 1).

2. Describe the car's motion when it is released at the ramp's lower end (Position 2).

3. Compare the two cars' motions and explain why they are different.