問題一覧
1
is the branch of physics that studies the behavior and properties of the light as well as its interaction with matter
Optics
2
Light travels in a ________
Straight line
3
Ligh travels at a speed of _______
3x10⁸m/s
4
it forms imahe by reflecting light
Mirrors
5
it forms imqhes by refracting light
Lenses
6
is a branch of physics that studied the interaction of electric and magnetic fields
Electromagnetism
7
Magnet was used to refer to a certain stones discovered by Greeks ____ years ago in the island of Magnesia
2000
8
These black stones have the unusual property of attracting iron objects.
Lodestone
9
What are the two poles of magnet
North and South magnetic pole
10
It attract objects that are made from certain metals, specially iron and nickel.
Magnet
11
These materials are slightly attracted by magnets.
Paramagnetic Materials
12
These fields allow magnets to attract objects without touching them.
Magnetic Fields
13
These materials are slightly repelled by magnets.
Diamagnetic Materials
14
These materials are strongly attracted by magnets.
Ferromagnetic Materials
15
It is the bending of a wave when it passes from one medium to another
Refraction
16
It is when a ray of light approaches a smooth polished surface and the light ray bounces back
Reflection
17
Unlike poles of different magnets________
Attract each other
18
If two magnets were in this order: NS SN they would attract
False
19
A ferromagnetic material is a material that shows strong magnetic effects
True
20
A magnet made of a material that keeps itd magnetism is known as a temporary magnet
False
21
By hitting it very hard, magnet temporarily lose its magnetism
True
22
If two magnets were in this order: NS NS they would attract
True
23
The relationship between electricity and magnetism is known as electricmagnetism
False
24
Magnets have only one pole
False
25
An electromagnet can be easily turned on and off
True
26
Magnets have poles called West Poles and East Poles
False
27
The pushing a pulling force of a bar magnet strongest at the end of a magnet
True
28
They are enclosed in the scrotum.
Testes
29
Is responsible for many of the male characteristics.
Testosterone
30
Collects mature sperm which is eventually propelled through the vas deferens.
Epididymis
31
Sperm travel through this tube, joins with urethra.
Vas deferens
32
The tube is cut to prevent sperm leaving (and fertilizing an egg) This procedure can be done right in the doctor's office.
Vasectomy
33
Gland that produces a fluid that carries sperm during ejaculation. It surrounds the urethra.
Prostate
34
This is where the eggs are produced through cell division (MEIOSIS)
Ovary
35
Results in four daughter cells being produced that have HALF the number of the original cell.
Meiosis
36
Develop when a single zygote splits. The babies are genetically identical. They also share one placenta.
Identical twins
37
Develop from the fertilization of two individual eggs.
Fratenal twins
38
Is responsible for the appearance of secondary sex characteristics of females.
Estrogen
39
Regulates menstruation
Progesterone
40
A fertilized egg
Zygote
41
An egg is usually a few days old before it implants in the uterus. At this point, it has already divided several times and is called a
Blastula
42
Consists of a body and a cervix. The cervix protrudes into the vagina. Maintains an environment for accepting a fertilized egg.
Uterus
43
If no fertilized egg reaches the uterus, the lining is shed monthly in a process known as
Menstruation
44
The start of the menstrual cycle
Menarche
45
The end of cycle
Menopause