What is the evidence of energy transfer in this picture?

A student makes a rubber band car. When the student winds up the rubber band, the car moves. There is a cause and effect relationship between the number of times the student winds the rubber band and how far the car travels.

What effect does the rubber band have on the distance the car travels?

If the student were to wind the rubber band 50 times, how far would you predict the car would go?

What does increasing the number of winds in the rubber band do to the energy in the system?

A collision occurred between a bowling ball and a basketball. Which of the following evidence would you look for to determine if energy was transferred between these two objects?

A student took one ball and rolled it so that it ran into another ball. What do you need to know to predict how far each ball might move as a result of the collision?

A student measures how long it takes different toys to travel 10 meters. The data he collected is in the data table.

Based on this data, which toy was traveling at the fastest speed?

Thomas and Joel each rolled a ball at the same time. The balls collide as shown.

Which person rolled the ball faster?

What two variables affect the amount of work done on an object?

A student is trying to move a large rock that is stuck in the ground. The student tries different methods to move the rock. She recorded her data to see which method took the least amount of force to move the rock.

Which method took the least amount of force to move the rock?

A science class wanted to know if an empty wagon and a wagon full of books would roll down a ramp at the same speed. Which ramps should the students build to perform a fair test? Look carefully at the numbers by the ramps.

Jasmine and Elijah are building a wheelchair ramp outside of their school. The location they want to build the wheelchair ramp has 20 heavy bricks on it. Before they begin their project, they need to move the bricks. The list below provides simple machines and the reason they could use the simple machine.

Which of the simple machines would help to solve their problem? Select all that apply.

Workers at a warehouse lift heavy boxes onto shelves 1 meter off the ground. The company is conducting an experiment to find a method to lift the boxes that uses less force. The company built three ramps. Each ramp is made of the same material. The steepness of each inclined plane is different. A scientist will push the same box up each ramp three times. The scientist will record the amount of force needed to push the box up each ramp. He will then lift the same box straight up from the ground a distance of 1 meter three times, and he will record the amount of force needed for this.

TESTABLE QUESTION: How does the steepness of an inclined plane affect the force needed to move a box up the plane?

Identify the independent variable in this experiment. (What is the scientist changing?)

The scientist has recorded the force needed to move the box up each ramp. After doing three trials, he has also calculated the average force needed to move the box up each ramp.

Which method of moving boxes should the company choose so that the least amount of force is required?