Balance the Forces
What is a hypothesis?
A concept or idea that you test through research and experiments
What is motion?
The action or process of moving or being moved
What is a prototype?
A first preliminary model of something.
True or False: Squares are typically the strongest shape
False: Triangles
What is a blueprint?
A design plan
What are forces?
A push or pull that can change the state of motion of an object
The speed of an object in a particular direction
The maximum speed attainable by an object as it falls
What is gravity?
That forces that pulls objects toward the center of the earth
Draw a trajectory of an object in motion
Could be anything from a basketball going inside a hoop, a rocket landing on the moon, etc.
True or False: Gravity is a push force
False. It is a push force
Describe how the Balloon Powered Car project relates to stability and motion.
It relates to stability because your car design has to have stables and balanced wheels and axels in order to function properly. The car is only in a state of motion once you blow the balloon to thrust it forward.
Mass and Velocity
What is torsion?
The action of twisting or the state of being twisted.
What is inertia?
The tendency of an object to resist changes in its state of motion
Describe what a balanced force is and draw an image that can represent a balanced force
Drive the force arrows of an object in motion
Student draws object with lift, gravity, thrust and drag forces arrows.
What is air resistance and what are some objects that have high air resistance?
A kind of friction that occurs between air and another object. Some examples are leaves, feathers, and pieces of paper.
True or False: Compression is a pull force.
False, it is a push force
A pneumatic device is something that contains or is operated by air or gas under pressure. Examples include brakes on buses or trucks, bicycle pumps, jackhammer, etc.
Explain how the Suspends activity and the Imagination Kits (Towers) activity are similar.
Both activities are about balance and balancing pieces in order to continue forward with each project. For Suspends, you had to match equal and opposite forces on either side to get your parts to balance. For the Imagination Kits you wanted to make sure that you were building the tallest tower by balancing your materials as you built up and that your tower was not off-center.
Describe the different forces we saw in the String Balloon Rocket activity we did.
The balloon air was used to thrust the rocket forward, the string provided lift, gravity was also pulling down on the balloon, and drag could be the air going against the balloon AND THE FRICTION of the straw and string.
Explain how friction (air resistance) relates to the Landers project that we did
Draw a bridge with the compression and tension force arrows
drawing
Draw an example of a pulley system and explain.
Examples include flag on a flagpole, sailboat masts, elevators, wells (hoist a bucket out of a well, curtains at a theatre, etc.