Warbler November 2019

SCIENCE
SCIENCE NEWS
Stuff you didn’t know you didn’t know!
This month – should I squeeze my tea bags?
Some tea aficionados insist that squeezing the tea bag can
release tannins, which makes the tea taste bitter. However, there
is nothing special about tannins that keeps them safely trapped
in the bag until you squeeze it. Longer brewing times means
higher concentrations of all the flavour compounds, including
tannins, which makes for a stronger cuppa. Squeezing just
accelerates the process slightly because you do not need to wait
for the molecules to diffuse out passively. Some tea bags are
actually sold with drawstrings, to make squeezing the bag even
easier.
Of course, a true tea lover would always brew up in a pot, not
the cup, and avoid the squeeze or not squeeze debate entirely.
1.7 Million Years
The age of a rhino tooth that Danish
researchers obtained a sample of DNA
from. It’s the oldest genetic information
ever collected
201Km
The diameter of Loki, a giant volcano on
Jupiter’s moon Io that’s poised to erupt
any time.
4.6 Million Years
In Numbers
The age of the Sahara Desert, as estimated
by analysing ancient dust that was blown
across to the Canary Islands millions of
years ago.
Wilnecote Warbler
November 2019
Calculators - Please remember that all Y9, Y10 and Y11 students are expected to bring a
scientific calculator to all Science lessons. If they don’t, they will be issued with a half hour detention
for lack of equipment
Revision Guides
CGP Tier Cost
These will soon be Double Science Revision and Practice (3 books) H/F £12
available to purchase Separate Sciences Revision and Practice (3 Books) H/F £16.50
on Parent Pay. We are
Collins Tier Cost
offering guides from Double Science All-in-One Revision and Practice (1 book) H/F £9
two different publishers Separate Sciences All-in-One Revision and Practice (3 book) H/F £11.97
as both were popular
with the students when we asked them. Please indicate Foundation or Higher when ordering.
10