Rational Numbers
Space Exploration
Telescopes
Math Mystery Box
Science Mystery Box
100
Is the answer to the following question positive (+), negative (-) or zero (0)?
-3.41 - (-3.41)
-3.41 -(-3.41) = -3.41 + 3.41 = 0
100
What is the primary difference between a star and a planet?
A star makes it own light (by nuclear fusion). A planet does not (it just reflects light).
100
FAST, the world's largest telescope built in China, is a ground-based reflecting telescope. But, when I look at it, it doesn't look shiny like a mirror.
Why is this a reflecting telescope?
It observes radio waves, which bounces off (reflects) off of the metal dish like a mirror! Our "mirrors" are only shiny because they reflect visible light.
100
TRUE OR FALSE: 0 is a natural number.
FALSE! Natural numbers are 1, 2, 3, 4, 5, ...
100
Name two differences between a plant and animal cell.
Number and size of vacuoles
Presence of chloroplasts
Presence of cell wall
Shape
Size
Presence of lysosomes
200
What is
3/8 - 1/16 = ?
3/8 - 1/16 = 6/16 - 1/16 = 5/16
200
Which element in the universe is the SIMPLEST, with only 1 proton and 1 electron?
Hydrogen! (H)
200
What is the most dangerous form of electromagnetic radiation?
Gamma rays (shortest wavelength, highest energy!)
200
What shapes is the net of a cylinder made from?
Two circles and a rectangle.
200
The James Webb Space Telescope has a number of small hexagonal mirrors that fit together to make one big mirror. How many hexagonal mirrors does this telescope have?
18!
300
Is the answer to the following question positive (+), negative (-) or zero (0)?
(-6)times(+5)times(-4)times(+3)times(-2)times(+1)times(0)
Zero! The last number is 0, and 0 x anything = 0.
300
What type of spectrum is this?
Bonus: can you name the element this comes from?
Emission spectrum
300
The Spitzer telescope is an infrared space telescope. What is the primary reason it is a space telescope?
That particular type of infrared is blocked by our atmosphere, so to see it, you have to be in space!
300
TRUE OR FALSE: These fractions are equivalent.
(-2/-3) and (8/12)
True!
300
Name 4 simple machines.
Screw
Inclined plane (ramp)
Lever
Wheel and axle
Pulley
Wedge
400
Convert the following to a fraction:
0.019
(0.019)/1 = 19/1000
400
What is the approximate azimuth and altitude of the planet NEPTUNE that is on the wall in the class?
<to be assessed my Mr. Gazer for reasonablness!)
400
Why are radio telescopes so large?
Telescope mirrors need to be at least as big as the wavelength (size) of the light wave. Radio waves are big, so the dish must be big!
400
What is 30% of 80?
24 (first, what is 10%? Then x 3!)
400
Name 4 parts of the eye (remember Grade 8 Science?)
Retina
Pupil
Ciliary Muscle
Optic Nerve
Lens
Iris
500
Estimate the following to within an error of 1:
(-1.1)(-3.3)(+5.5)(-9.99)
(-1.1)(-3.3)(+5.5)(-9.99)≈ (-1)(-3)(+6)(+10)≈+180
500
What type of spectrum is shown, and explain why a star's spectrum might look like this:
Absorption Spectrum.
Explanation: The inside of stars emit a continuous spectrum (full rainbow, it's hot and dense!)
The outer layer/atmosphere of the star is thin and cool and absorbs specific wavelengths (colours) that depend on what's in the atmosphere.
That's why some dark lines appear - those colours were absorbed by those elements (like H, He, ...)
500
In the Atacama Desert, high up in the mountains of Chile, there are a bunch of telescopes connected together in an array. Connecting telescopes together to make one "giant" telescope is called ____________.
Interferometry
500
Which of the following numbers DOES NOT BELONG?
11, 22, 33, 44, 55
11 - it's the only prime number!
500
The largest star known to us (at least as of ~5 years ago) is called "Canis Majoris", which in latin means ___________.
Canis Majoris = Big Dog