Question

6/10
concerning different thermometer scales......
the number on
scales would
have no meaning
without fixed
points where
they can be
compared.
the fahrenheit
is more
accurate since
it has more
degrees than
the celsius
scale.
the celsius is
less precise
since degrees
below freezing
are negative
values.
the celsius is
more precise
since it has the
same degree
interval size as
the kelvin scale.

Explanation:

To determine the correct statement about thermometer scales:

1. Analyze each option:

• First option: Thermometer scales (like Celsius, Fahrenheit, Kelvin) rely on fixed points (e.g., freezing/boiling of water) for meaning. Without fixed points, values lack context (e.g., 0°C means freezing, but without fixed points, 0 is arbitrary). This is correct.
• Second option: Accuracy depends on calibration, not number of degrees. Fahrenheit has more degrees, but that relates to precision (smaller intervals), not accuracy. Eliminate.
• Third option: Precision relates to interval size (e.g., 1°C = 1.8°F, so Fahrenheit has smaller intervals, but negative values don’t reduce precision. Eliminate.
• Fourth option: Celsius and Kelvin have the same degree size (1°C = 1 K), but Kelvin starts at absolute zero. However, the statement’s reasoning is about precision, but “more precise” is incorrect (same interval size, so equal precision). Eliminate.

Answer:

the number on scales would have no meaning without fixed points where they can be compared.