Question

Question 1 (4 points)
(02.05 LC)

What is conduction? (4 points)

a
Transfer of heat through circular movement

b
Transfer of heat through direct physical contact

c
Transfer of heat through electromagnetic waves

d
Transfer of heat through the movement of particles

Question 2 (4 points)
(02.05 LC)

In order for convection to transfer heat, particles need to (4 points)

a
absorb solar and fossil energy

b
circulate and move within a liquid or gas

c
make contact with the heat source

d
transmit electromagnetic waves

Question 3 (4 points)
(02.05 LC)

Standing near a campfire, you can feel heat. This is an example of (4 points)

a
acceleration

b
conduction

c
convection

d
radiation

Question 4 (4 points)
(02.05 MC)

How does thermal energy transfer when a slice of pizza is warmed in the microwave? (4 points)

a
Air currents cause particles in the pizza to circulate.

b
Direct contact of the pizza with the oven creates heat.

c
Electromagnetic waves transmit heat to the pizza.

d
Movement of particles in the microwave generate heat.

Question 5 (4 points)
(02.05 MC)

How does radiation differ from conduction? (4 points)

a
Radiation can move through empty space to transfer heat; conduction cannot.

b
Radiation needs a medium in order for heat to transfer; conduction does not.

c
Radiation requires objects to have direct physical contact; conduction does not.

d
Radiation transmits heat by circulating particles in an object; conduction does not.

Answer 1

Answer:

Hᴇʏ ɢᴜʏs,

$\begin{gathered}\begin{gathered}\begin{gathered}\begin{gathered}\begin{gathered}\begin{gathered}\sf Trigonometry\: Table \\ \begin{gathered}\begin{gathered}\begin{gathered}\begin{gathered}\boxed{\boxed{\begin{array}{ |c |c|c|c|c|c|} \bf\angle A & \bf{0}^{ \circ} & \bf{30}^{ \circ} & \bf{45}^{ \circ} & \bf{60}^{ \circ} & \bf{90}^{ \circ} \\ \\ \rm sin A & 0 & \dfrac{1}{2}& \dfrac{1}{ \sqrt{2} } & \dfrac{ \sqrt{3}}{2} &1 \\ \\ \rm cos \: A & 1 & \dfrac{ \sqrt{3} }{2}& \dfrac{1}{ \sqrt{2} } & \dfrac{1}{2} &0 \\ \\ \rm tan A & 0 & \dfrac{1}{ \sqrt{3} }&1 & \sqrt{3} & \rm \infty \\ \\ \rm cosec A & \rm \infty & 2& \sqrt{2} & \dfrac{2}{ \sqrt{3} } &1 \\ \\ \rm sec A & 1 & \dfrac{2}{ \sqrt{3} }& \sqrt{2} & 2 & \rm \infty \\ \\ \rm cot A & \rm \infty & \sqrt{3} & 1 & \dfrac{1}{ \sqrt{3} } & 0 \end{array}}}\end{gathered}\end{gathered}\end{gathered} \end{gathered}\end{gathered}\end{gathered}\end{gathered}\end{gathered} \end{gathered}\end{gathered}$

TrigonometryTable

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Eᴠᴀʟᴜᴀᴛᴇ ᴛʜɪs :

I) sɪɴ60°ᴄᴏs30°+sɪɴ30°ᴄᴏs60°

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