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 = -6.82
100
What is the approximate azimuth of Polaris, otherwise known as the North Star?
Somewhere between ~358 degrees --> 1 degree.
100
The Hubble Space Telescope is called a ___________ telescope because it uses a big mirror to collect and focus light to magnify distant objects.
A reflecting telescope.
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
Is the answer to the following question positive (+), negative (-) or zero (0)?
(-1)(-2)(-3)(+4)(-5)
Positive (there are an even number of negative signs!) Each pair of negatives makes a +.
200
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).
200
What is the full name of the telescope shown in the image below?
James Webb Space Telescope (JWST)
200
How many triangles does a square-based pyramid have on its surface?
Four! 
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 space object is shown in this image, and in which direction is the Sun?
A comet! The Sun is downwards.
300
What are the TWO KEY ADVANTAGES of space telescopes vs. ground-based telescopes?
1) Space telescopes are above the atmosphere and thus they see objects more clearly (no distortion of light by the atmosphere).
2) Space telescopes can see certain types of light that CANNOT MAKE IT THROUGH OUT MAGNETIC FIELD + ATMOSPHERE (e.g. X-rays, UV/ultraviolet, gamma rays, etc).
300
TRUE OR FALSE: These fractions are equivalent.
(-16)/(-20) and -4/5
False!
300
Name 4 simple machines.
Screw
Inclined plane (ramp)
Lever
Wheel and axle
Pulley
Wedge
400
Convert the following to a fraction:
0.000002
Then, simplify it as much as possible.
(0.000002)/1 = 2/1000000 = 1/5000000
400
Before looking at Jupiter with his telescope, what did Galileo look at and make detailed drawings of?
The Moon!
400
When looking for exoplanets (planets around other stars besides our Sun), the central star is usually too bright for the telescope to see its planets.
What tool can we use to block the star's light and see its planets?
Use a coronagraph!
400
What is 60% of 50?
30
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:
(-3.1)(-4.89)(+1.2)(-2.99)
(-3.1)(-4.89)(+1.2)(-2.99) ≈ (-3)(-5)(+1)(-3) ≈ 45
500
What is the name of our galaxy, and what is the name of the closest galaxy to our own?
Our galaxy = The Milky Way
Closest other galaxy = Andromeda
500
a) Why can't we see through smoke?
b) How would we be able to see through the smoke?
a) Optical light is blocked by smoke/dust.
b) Look with an infrared (IR) camera. IR light can travel through smoke/dust!
500
Which of the following numbers DOES NOT BELONG?
11, 19, 21, 29, 31
11, 19, 21, 29, 31
It is the only number that is NOT a prime number!
500
Which of the following does not belong and why?
oxygen, water, iron, chlorine, hydrogen
iron - it is the only one that is not a fluid at room temperature!