Words for the Wise
Phraseology[Easy to challenging]
These word pictures represent common phrases or terms used in science. The first, for example, means "half-life." You'll need to think "inside the box" to decode the others.
Connect the Letters[Easy]
The set of simple words listed below has an unusual property: Any two words share exactly one letter. For instance, ado
share the letter o,
share the letter d.
There is a seventh word that completes the set. What is it? Note that rob,
for example, would not be a valid solution because it shares two of its letters with words already on the list (boy
would not be a valid solution, as it shares all three letters with a word already on the list (ore).
Hint: The diagram below can help.
|1. || ADO|| BOY|
| ORE|| YEA|
| BAR|| BED|
| __ __ __|
Fill in the missing words in the four sets below. Hint: Every letter occurs the same number of times within each complete set; words in sets 4 and 5 share more than one letter. You can use the triangular diagram for sets 2 and 3.
|2.|| POT|| HOE|
| TIE|| ION|
| NTH|| PEN|
| __ __ __|
|3.|| TOE|| STY|
| USE|| YOU|
| __ __ __ |
| __ __ __|
|4.|| RATES|| CARTS|
| CASTE|| CARES|
| __ __ __ __ __|
|5.|| NAIL|| IDEA|
| SALE|| SLID|
| SINE|| SAND|
| __ __ __ __|
Powers of Ten[Easy to challenging]
Science and technology often deal with very big or very small numbers. These days computer hard drives, for example, typically hold several billion bytes, or giga
bytes, of binary-coded information. One billion is represented in scientific notation by 109
, which stands for 10 multiplied by itself nine times, or 1 followed by nine zeros. Going in the opposite direction, the size of an atom is measured in picometers, or trillionths of a meter. One-trillionth of a meter is written as 10-12
; the minus sign in front of the exponent 12 means 10 is multiplied by itself 12 times but divided into 1, yielding the unwieldy fraction 1/1,000,000,000,000. In the matching game below, try to pair up each of these 12 metric prefixes with its correct power of 10. (This should be a simple task for scientists and for our foreign readers, but it may be daunting for metrically challenged Americans.)Solution
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