Tallest Tower
What is the tallest building in the world?
Burj Khalifa
What is defined as energy in motion?
Kinetic energy
name two of the three types of catapults discusses in this workshop
trebuchet, mangonel, ballista
Name three ways we are moving even when we stand perfectly still? ( Do not include motion of atoms, beating of heart or any other internal body motions)
Rotate on axis, revolve around the sun. revolve around the center of the milky way galaxy
How long ago did the dinosaurs go extinct?
65 or 66 million years ago
Which type of stress causes materials to decrease in volume?
compression
What type of energy is defined as stored energy due to position?
potential energy ( accept elastic potential energy)
In projectile motion, what is constant in the x-direction
velocity ( you can accept speed but just remind the kids that velocity is speed in a given direction)
Name three parts of a pendulum.
bob (weight), cord (string) and fulcrum (pivot point)
What are two factors that determine an object's momentum?
velocity and mass
Which type of stress causes materials fo stretch?
tension
True or false, energy can be created or destroyed
False
Name three things used as ammunition in catapults
stones (Mangonel/Trebuchet) b. sharp wood poles (Ballista) c. darts (Ballista) d. pots of greek fire (Mangonel/Trebuchet) -- ancient Molotov cocktail (composition is still debated) e. quicklime (Mangonel/Trebuchet) -- lit and thrown react with CO2 in air increase heat of the fire when contact water, would continue to burn in water f. burning tar (Mangonel/Trebuchet) g. burning sand (Mangonel/Trebuchet) -- became trapped inside armor h. dung (Mangonel/Trebuchet) i. dead animals (Mangonel/Trebuchet) j. body parts (Mangonel/Trebuchet) k. dead and mutilated bodies (Mangonel/Trebuchet) l. diseased bodies (Mangonel/Trebuchet) -- first biological warfare m. Bee Hives
What does oscillation mean?
cycle or back and forth
What was Isaac Newton's famous quote about how he was able to make such great scientific discoveries?
If I have seen further than most it is because I stood on the shoulders of giants. ( accept anything close to this)
What is the term for twisting of materials by the exertion of forces?
torsion
Energy can be released as heat due to _________
Friction
Which type of catapult was designed for maximum force?
Trebuchet
What is the definition of the following term: period of a pendulum?
time for one cycle of oscillation
What was the first thing dropped out of a hot air balloon using a parachute ?
a dog
That does LIGO stand for?
Laser interferometer gravity wave observer
what is energy?
The ability to do work or make change
50 kg of feathers or 50 kg of bowling balls hit the ground first if they were dropped the same height at the same time and there was no air resistance.
they would hit at the same time
What does the Foucault pendulum prove?
The Earth spins on its axis
Why did the New York times apologize to Robert Goddard in July of 1969?
They mocked his idea that rockets could work in the vacuum of space. ( Which they can) The apology came as Apollo 11 was on the way to the moon.