Question

perature, which os
ow many degrees
Multiple choice questions
A. Choose the correct option.
1. if heat energy is removed from an object, its
temperature will
a) fall
b) rise
c) remain steady d) fall then rise
2. Which of these are applications of expansion
of solids?
i) covering a metal wire with an
insulator
ii) rusting of things made of iron
iii) spaces between the railway tracks
iv) heating the metal rim of bullock cart
wheels before they are fixed
a) (i) and (ii)
b) (i) and (iii)
c) (i) and (iv)
d) (i) and (iv)
3. For the same rise in temperature,which of
the following statements is false?
a) Liquids expand more than solid
b) Solids expand less than gases.
c) Liquids expand more than gases
d) Gases expand more than solids.
4. In the Fahrenheit scale, how many degrees
are between the upper and lower fixed
points?
a) 100
b) 32
C) 212
d) 180
5. What would a 10°C rise in temperature be
equal to in the Fahrenheit scale?
a) 10 °F
b) 18 °F
c) 50 °F
d) 9 °F
PLEASE ANSWER FAST ​

Answer 1

Answer:

Explanation:

1 : If heat energy is removed from an object its temperature decreases,so option A is correct answer,fall.

2 : Solids also undergo thermal expansion. Railroad tracks and bridges, for example, have expansion joints to allow them to freely expand and contract with temperature changes. ... The greater the temperature change, the more a bimetallic strip will bend,Option B or C is correct answer.

3 : Heat causes the molecules to move faster, (heat energy is converted to kinetic energy ) which means that the volume of a gas increases more than the volume of a solid or liquid. However, gases that are contained in a fixed volume cannot expand - and so increases in temperature result in increases in pressure,So Option C is the correct answer.

4 : In this type of scale, the lower fixed point is 32 degree F and the upper fixed point is 212 degree F. The interval between these two upper and lower fixed points is divided into 180 equal divisions. Each of the divisions is called one degree fahrenheit,So,again option C is correct answer.

5 : The equation to convert Celsius to Fahrenheit is:

F = C * (9/5) + 32

The +32 is to account for the fact that 0 degrees Celsius is equivalent to 32 degrees Fahrenheit. (Originally my answer was missing this part — thanks Bob Myers for pointing this out).

Using this equation after removing the +32, we can see that one degree Celsius equals 9/5 or 1.8 degrees Fahrenheit.

Therefore to compute a change of 10 degrees Celsius in Fahrenheit, we can use the same equation (without the +32 offset, because we are measuring a change, not an absolute temperature):

F = 10 * (9/5)

F = 10 * 1.8

F = 18

The freezing point of water is 32 degrees Fahrenheit (°F),So 32+18, 50°F Option C is correct answer.

6 : To find the temperature when both are equal, we use an old algebra trick and just set ºF = ºC and solve one of the equations. So the temperature when both the Celsius and Fahrenheit scales are the same is -40 degrees,So option C is correct answer.

7 : Option D is correct answer .

8 : Alcohol thermometers are used rather than mercury thermometers in very cold regions because alcohol has a lower freezing point than mercury. ... If it freezes it won't move in the tube, so a liquid must be used that has a freezing point that's lower than the temperature it's measuring,So option A is correct answer.

Hope it helps you.

Answer 2

Answer:

1=a,2=c,3=d,4=b,5=c