Forces & Motion
The name of the force that pulls all objects downward
Gravity
True or False: it is safe to look at the sun through diffraction glasses
FALSE!!!
The farthest that humans have travelled in space
To the moon
What positive and negative charges do when they get close together
Attract
This scientist came up with a set of famous equations, known as Maxwell's equations, which describe the behaviour of electricity and magnetism.
James Clerk Maxwell
The name for the upward force on an aircraft
Lift
False.
Digital cameras
What the liquid in a thermometer does when heated
It expands
This scientist was one of the creators of Quantum Theory, which explains how matter operates at the microscopic level. He also has a famous paradox named after him involving a cat.
Erwin Schrodinger
The name of the force that counters an aircraft's motion
Drag
The name for the height of a sound wave, representing how loud it is.
Amplitude
This cosmic object sucks in all nearby material, including light, making it invisible. (We can still detect it from its effect on its surroundings.)
Black hole
This instrument can be used to detect the presence of static electrical charge
Electroscope
According to the famous story, this scientist came up with the theory of gravity when an apple fell on his head.
Isaac Newton
The name physicists give to the energy of motion
The name for how closely-spaced sound waves are, representing the pitch of the sound.
Frequency
The age of the universe, according to current astrophysical models
13.7 billion years
The approximate temperature at which liquid nitrogen boils
About -200 degrees Celcius (-195.8 degrees Celcius to be exact)
This scientist transformed our understanding of space and time when he came up with the theory of special relativity in 1905 and the theory of general relativity in 1915.
Albert Einstein
The name for the maximum speed of a falling object.
Terminal velocity
The name given to the set of colours given off by an element when heated in a tube.
Spectrum
The type of light (range of wavelengths) that the James Webb space telescope observes.
Infrared
The name of the effect that explains why liquid nitrogen won't hurt if you touch it very quickly.
The Leidenfrost effect
This scientist is the only person to win two Nobel prizes in different subjects (Chemistry and Physics). She coined the term "radioactivity" while she was investigating radioactive elements.
Marie Curie