# 1เลือกประเภท
Which statement is correct about wind?
คำตอบทั้งหมดถูกซ่อนอยู่ในขณะนี้
1 and 2
1 and 3
2 and 3
1, 2 and 3
Science
AjPuypui
เรียงลำดับ
Science
4
Science
4
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public quiz
# 2เลือกประเภท
From the picture, when object A is rubbed against object B and then object B is placed near object C,object C will be sucked into moving next to object B. Which are objects A, B, and C, respectively?
Paper, electric wire, plastic
Fabric, plastic pipe, hair
Steel ruler, paper, dust particles
Wooden stick, pan, wire
# 3เลือกประเภท
When rub 2 balloons with dry cloth and place them close together, why is there a force of repulsion?
Because both balloons are electrically neutral.
Because different types of electrical charges are created on the balloon.
Because the same type of electrical charge is created on the balloon.
Because there is an exchange of electrical charge between the two balloons.
# 4เลือกประเภท
Which one is responsible for distributing electrical energy in an electrical circuit?
a
b
c
d
# 5เลือกประเภท
Boy wants to invent a simple lighting device. Which equipment is not necessry to be used?
A motor
An electric cell
A light bulb
An electric wire
# 6เลือกประเภท
Which is a circuit diagram of connecting the electrical circuit as shown in the figure?
a
b
c
d
# 7เลือกประเภท
Which circuit diagram makes the light bulb bright?
a
b
c
d
# 8เลือกประเภท
Joke has two batteries of the same size, two light bulbs of the same size, and wires. He wants to do an experiment with electrical circuits. Which one will make the light bulb the brightest?
a
b
c
d
# 9เลือกประเภท
Which is correct about connecting electric cells in series?
It makes the electric current flow through electrical equipment evenly in the electrical circuit.
The voltage in the circuit decreases causing more current to flow in the circuit.
It generates electric current to flow back and forth within an electrical circuit.
Connecting the positive terminal of one cell to the negative terminal of another cell in the same row.
# 10เลือกประเภท
Look at the battery holder of a remote control. If Namo would like to put batteries to make the remote control work, which method should he use?
a
b
c
d
# 11เลือกประเภท
Look at the following electrical circuit diagram. Which statement is correct?
Light bulb A is connected in series with light bulb C.
Light bulb A is connected in parallel with light bulb B.
Light bulb B is connected in parallel with light bulb C.
Light bulbs A, B and C connected in parallel.
# 12เลือกประเภท
Which one explains how shadows are formed?
Light moves from a light source in all directions.
Light travels at a faster speed than sound.
Light travels in a straight line.
Light can be refracted.
# 13เลือกประเภท
When objects block the path of light, which object cannot cast an umbra?
A soccer ball
Eyeglass lenses
A book
A mobile phone
# 14เลือกประเภท
Which of the following does not create a penumbra shadow on the screen given that A is the light source, B is the object blocking light, and C is the screen?
a
b
c
d
# 15เลือกประเภท
When the light source, the object blocking light, and the screen are placed as shown. How will shadows be seen on the screen?
a
b
c
d
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