Musings

A random collection

Archive for the ‘general’ Category

GEN: Misc

Warmers

  1. NIEHS Brain Teasers
  2. Discovery Education
  3. Hogies
  4. David Bau
  5. Math Fair
  6. Book: Moscow Puzzles
  7. MENSA Brain Teasers Archive
  8. British MENSA another one

A Small Collection

  1. Given 5 chains with 3 links in each. You need to join them to create 1 single long chain from them by breaking links and joining them. What is the smallest number of links that you will break and join to make the long chain? (Source: Moscow Puzzles Ch 1, Puzzle #13, pg 5)
  2. Given a box with 8 RED socks and 6 BLUE socks. What is the minimum number of socks you must pick without looking at them so that you will have at least 2 socks of the same color?

Written by curious

July 22, 2010 at 1:13 pm

Posted in kiddie

GEN: Ride

Return:
2:30 – 3:24 (13)
3:45 – 4:31 (6)
4:05 – 5:08 (14)
4:39 – 5:31 (8)
4:48 – 5:42 (10)
4:57 – 5:39 (4)
5:16 – 5:55 (2)
5:23 – 6:20
5:47 – 6:50
6:01 – 6:34×6:41 – 6:50 (4)
6:25 – 7:09 (5)
6:30 – 7:26

5:23 – 5:36
5:32 – 5:46
5:40 – 5:50
5:43 – 5:53
5:46 – 5:56

6:02 – 6:16
6:10 – 6:20

Option 2

 737 	757 	337 	709 	739 	237 	759 	339
-------------------------------------------
05:23 	05:32 	05:40 	05:43 	05:43 	05:46 	06:02 	06:10 	
05:36 	05:46 	05:50 	05:53 	05:53 	05:56 	06:16 	06:20 
FAST 	SLOW 	FAST 	FAST 	FAST 	FAST 	SLOW 	FAST 

Written by curious

July 8, 2010 at 3:24 pm

Posted in general

Protected: GEN: Career Mistakes

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Written by curious

July 4, 2010 at 12:16 pm

Posted in general

GEN: Solar System

Solar System Facts

  1. Solar System was formed 4.6 billion years ago
  2. Solar System is made up of everything in space that travels around our Sun
  3. There are 8 planets in the Solar System, all very different from each other
    1. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
  4. There are other objects too – comets, meteoroids, asteroids
  5. Sun makes up 99 percent of everything in the Solar System. 1 million earths  could fit inside the sun
  6. It takes Sun’s light a little over 8 minutes to reach Earth
  7. Temperature at Sun’s core is about 27 million F. Temperature at it’s surface is about 10,000 F.
  8. Gravity is an invisible force that pulls one object toward another object. Larger an object the stronger its pull
  9. Sun’s gravity keeps all the planets and other objects in Solar System together
  10. Earth’s gravity makes you fall when you jump up. Earth’s gravity also keeps moon in orbit around it
  11. Each planet travels around the Sun at a different speed
    1. Length of Orbit around Sun — Mercury – 88 days, Venus – 225 days, Earth – 365 days, Mars – 687 days, Jupiter – 12 years, Saturn – 29 years, Uranus – 84 years, Neptune – 165 years (all measured in earth days)
  12. Each planet also spins like a top. Spinning like a top causes Day and Nights
  13. Uranus is spinning
  14. Terrestrial planets – the 4 inner planets (Mercury, Venus, Earth, Mars). They are solid and made of rocks. They also have a layer of gas (atmosphere) around them
  15. Mercury: 36 million miles/58 million kms from the Sun. Temperature range: 870F to -300F. Smallest planet
  16. Venus: Hottest planet ~ 880F, atmosphere full of thick clouds which hold heat, reflect sunlight and make Venus shine. Has huge volcanoes
  17. Earth: Neither too hot nor too cold – Goldilock. Has lots of liquid water 71% of surface covered with water. Travels at around 18.5 miles per second/30 km per second around the Sun. It is about 93 million miles/150 million kms from the Sun
  18. Mars: Closest planet to Earth. Half the size of Earth. Looks like a dry desert but might have had rivers, lakes or oceans at one time. Looks red because it has a lot of iron oxide (rust) in its soil.
  19. Jovian planets – Jupiter and the rest of the outer planets. These have a core of rock and ice but outer layers are made of gas.
  20. Jupiter: Largest planet in the Solar System – can fit a thousand Earths inside it. Has a “Great Red Spot” which is bigger than Earth. It is a storm going on it for hundreds of years.
  21. Saturn: Second largest planet. Has biggest rings all made of rock and ice, 175,000 miles wide but only about 1 km thick.
  22. Uranus: Mostly made of thick clouds and gas – no surface. It spins on its side. Perhaps something knocked it hard around the time Solar System was beginning and it tilted on its side
  23. Neptune: The farthest planet (2.8 billion miles/4.5 billion kms) from the Sun, it is the coldest planet
  24. More stuff in the Solar System:
    1. Pluto. No more a planet because other objects discovered bigger than it, its been demoted to a “dwarf planets” category
    2. Meteoroids – bits of rocks and metal passing through the solar system. Sometimes they are pulled by gravity. A meteoroid falling toward Earth starts burning up in the atmosphere. The streak of light it creates is called a “Meteor“/Shooting Star – it is a meteoroid passing through Earth’s atmosphere. A meteoroid that manages to reach the surface of Earth is a “Meteorite
    3. Asteroids – rock bigger than 1 km wide. Most of them in the asteroid belt – space between Mars and Jupiter
    4. Comets – chunks of rock, dust and ice going around in space. Some comets go in an eccentric orbit around the Sun. When a comet is near the Sun’ due to heat it’s ice becomes foggy and Sun’s wind turns the fog into a long tail
    5. Kuiper Belt – Beyond Pluto the solar system is filled with billions of chunks of frozen gas and water that is also orbiting around the Sun. These objects are however much smaller
  25. Telescopes
    1. Galileo – 1610
    2. Newton – 1668 – reflecting telescope
    3. Hubble Space Telescope – 1990 – optical telescope in the sky
    4. Arecibo Observatory – Puerto Rico – world’s largest telescope – 305m wide dish
    5. James Webb Space Telescope – 2013 – senses infrared waves
  26. Spaceships
    1. New Horizons – on one way journey through Solar System – started from Earth in 2006, will reach Pluto in 2015. Takes 6 hours for signals to reach from near  Pluto to Earth
    2. Cassini spacecraft – measured water vapor on Saturn’s moons
    3. Mars Global Surveyor – mapping Mars surface since 1999

Written by curious

June 26, 2010 at 11:51 am

Posted in general