What equation?
A space ship cruises at a constant velocity of 33,155 km/hr for 22.5 minutes. If solving for the unknown distance, what equation will you use?
v = d/t
The process of using experiment, observation and logical thinking to build mental models of the natural world.
What is science?
Ptolemy's model of the heaven's was what-centric?
Jimmy jumps to the left off the stern of his canoe into the lake. Jimmy's leap causes the canoe to shoot off to the right. Which of Newton's laws of motion apply best in this situation?
What is Newton's third law?
(In case of argument: every action force has an equal and opposite reaction force. Jimmy pushes the canoe to the right and the canoe pushes Jimmy to the left.)
This CDA staff member spiked a duck. (Not intentionally!)
Who is Mrs. Goodnough?
A driver accelerates her car from rest to a velocity of 35.9 mi/hr in 8.2 seconds. If solving for the unknowns acceleration, what equation do you use to solve this?
a = vf - vi /t
A positively stated, informed prediction about what will happen in certain circumstances. In other words, a prediction that results when a theory is applied to a particular situation.
What is a hypothesis?
Galileo Galilei's planetary model to explain the universe was this-centric.
What is heliocentric?
A woman accelerates her car to get on the freeway. Which of Newton's laws of motion apply best in this situation?
What is Newton's second law?
(In case of argument: the force provided by the engine and the mass of the car determine how rapidly the car accelerates.)
Who is Mr. Johnston/Pastor Brandon?
The enginge in a model rocket can deliver a thrust (force) of 11.87N, and the mass of the rocket is 196.5g. If solving for the unknowns acceleration, what equations do you use?
a = F/m
Limitations inherent in making measurements, relating to error, which is the difference between a measured value and a true value. (The lower the error, the higher this term is.)
What is accuracy?
Albert Einstein's planetary view was this-centric.
What is heliocentric?
A kid on a sled slides down a snow-covered hill but hits a rough spot of grass at the bottom. His sled stops suddenly but the kid keeps right on going. Which of Newton's laws best explains this situation?
What is Newton's first law?
This CDA staff member finished in the top ten in a state spelling contest when they were 14 years old.
Who is Mr. Davidson?
A standard baseball has a mass of 144.3g. If solving for the unknowns weight (in Newtons), what equations do you use?
Fw = mg
Anything made up of atoms or parts of atoms.
What is matter?
Ptolemy's geocentric model had this many "spheres" to make sense of the astronomical universe.
What is nine (9)?
A space ship is traveling in space at 20,000m/s when it runs out of fuel. As far as the captain can tell, there are no stars or other planets in front of him or anywhere else nearby. According to Newton's 1st law, what happens?
What is, the ship continues traveling at 20,000m/s in a straight line forever. (Or until encountering a gravitational field from a planet or star.)
This CDA staff member's favorite snack is any fruit with Tajin.
Who is Mrs. Palmer?
A proton with a mass of 1.675 x 10-24g is accelerated from rest to 15.750km/s in a time interval of 45.000 x 104ms. If solving for the unknowns force, what TWO equations do you need to solve this problem.
a = vf -vi /t
AND
a = F/m
The book's glossary defines this as: one of the basic constituents of the universe, the others being matter and intelligence. Another way this term is described is: "the capacity to do mechanical work".
What is energy?
Johannes Kepler made this many laws (that we have briefly studied) to explain planetary motion.
What is three (3)?
A boy is jumping up and down on a trampoline. He flies up in the air and is at the very top of his flight at the instant before he begins calling back down. Which of Newton's laws applies at this moment?
What is Newton's second law?
(Because I foresee argument: Anything close to the earth is accelerated by gravity according to the 2nd law, a=F/m. The gravitational attraction of the earth produces a net force on the boy which accelerates him and causes him to fall.)
This CDA staff member was once offered 10 camels for their hand in marriage. (They did not accept.)
Who is Mrs. Zylstra?