Science 4

45問 • 1年前

Jeon Jungkook

通報

問題一覧

is the branch of physics that studies the behavior and properties of the light as well as its interaction with matter

Optics

Light travels in a ________

Straight line

Ligh travels at a speed of _______

3x10⁸m/s

it forms imahe by reflecting light

Mirrors

it forms imqhes by refracting light

Lenses

is a branch of physics that studied the interaction of electric and magnetic fields

Electromagnetism

Magnet was used to refer to a certain stones discovered by Greeks ____ years ago in the island of Magnesia

2000

These black stones have the unusual property of attracting iron objects.

Lodestone

What are the two poles of magnet

North and South magnetic pole

It attract objects that are made from certain metals, specially iron and nickel.

Magnet

These materials are slightly attracted by magnets.

Paramagnetic Materials

These fields allow magnets to attract objects without touching them.

Magnetic Fields

These materials are slightly repelled by magnets.

Diamagnetic Materials

These materials are strongly attracted by magnets.

Ferromagnetic Materials

It is the bending of a wave when it passes from one medium to another

Refraction

It is when a ray of light approaches a smooth polished surface and the light ray bounces back

Reflection

Unlike poles of different magnets________

Attract each other

If two magnets were in this order: NS SN they would attract

False

A ferromagnetic material is a material that shows strong magnetic effects

True

A magnet made of a material that keeps itd magnetism is known as a temporary magnet

False

By hitting it very hard, magnet temporarily lose its magnetism

True

If two magnets were in this order: NS NS they would attract

True

The relationship between electricity and magnetism is known as electricmagnetism

False

Magnets have only one pole

False

An electromagnet can be easily turned on and off

True

Magnets have poles called West Poles and East Poles

False

The pushing a pulling force of a bar magnet strongest at the end of a magnet

True

They are enclosed in the scrotum.

Testes

Is responsible for many of the male characteristics.

Testosterone

Collects mature sperm which is eventually propelled through the vas deferens.

Epididymis

Sperm travel through this tube, joins with urethra.

Vas deferens

The tube is cut to prevent sperm leaving (and fertilizing an egg) This procedure can be done right in the doctor's office.

Vasectomy

Gland that produces a fluid that carries sperm during ejaculation. It surrounds the urethra.

Prostate

This is where the eggs are produced through cell division (MEIOSIS)

Ovary

Results in four daughter cells being produced that have HALF the number of the original cell.

Meiosis

Develop when a single zygote splits. The babies are genetically identical. They also share one placenta.

Identical twins

Develop from the fertilization of two individual eggs.

Fratenal twins

Is responsible for the appearance of secondary sex characteristics of females.

Estrogen

Regulates menstruation

Progesterone

A fertilized egg

Zygote

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

Consists of a body and a cervix. The cervix protrudes into the vagina. Maintains an environment for accepting a fertilized egg.

Uterus

If no fertilized egg reaches the uterus, the lining is shed monthly in a process known as

Menstruation

The start of the menstrual cycle

Menarche

The end of cycle

Menopause

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問題一覧

is the branch of physics that studies the behavior and properties of the light as well as its interaction with matter

Optics

Light travels in a ________

Straight line

Ligh travels at a speed of _______

3x10⁸m/s

it forms imahe by reflecting light

Mirrors

it forms imqhes by refracting light

Lenses

is a branch of physics that studied the interaction of electric and magnetic fields

Electromagnetism

Magnet was used to refer to a certain stones discovered by Greeks ____ years ago in the island of Magnesia

2000

These black stones have the unusual property of attracting iron objects.

Lodestone

What are the two poles of magnet

North and South magnetic pole

It attract objects that are made from certain metals, specially iron and nickel.

Magnet

These materials are slightly attracted by magnets.

Paramagnetic Materials

These fields allow magnets to attract objects without touching them.

Magnetic Fields

These materials are slightly repelled by magnets.

Diamagnetic Materials

These materials are strongly attracted by magnets.

Ferromagnetic Materials

It is the bending of a wave when it passes from one medium to another

Refraction

It is when a ray of light approaches a smooth polished surface and the light ray bounces back

Reflection

Unlike poles of different magnets________

Attract each other

If two magnets were in this order: NS SN they would attract

False

A ferromagnetic material is a material that shows strong magnetic effects

True

A magnet made of a material that keeps itd magnetism is known as a temporary magnet

False

By hitting it very hard, magnet temporarily lose its magnetism

True

If two magnets were in this order: NS NS they would attract

True

The relationship between electricity and magnetism is known as electricmagnetism

False

Magnets have only one pole

False

An electromagnet can be easily turned on and off

True

Magnets have poles called West Poles and East Poles

False

The pushing a pulling force of a bar magnet strongest at the end of a magnet

True

They are enclosed in the scrotum.

Testes

Is responsible for many of the male characteristics.

Testosterone

Collects mature sperm which is eventually propelled through the vas deferens.

Epididymis

Sperm travel through this tube, joins with urethra.

Vas deferens

The tube is cut to prevent sperm leaving (and fertilizing an egg) This procedure can be done right in the doctor's office.

Vasectomy

Gland that produces a fluid that carries sperm during ejaculation. It surrounds the urethra.

Prostate

This is where the eggs are produced through cell division (MEIOSIS)

Ovary

Results in four daughter cells being produced that have HALF the number of the original cell.

Meiosis

Develop when a single zygote splits. The babies are genetically identical. They also share one placenta.

Identical twins

Develop from the fertilization of two individual eggs.

Fratenal twins

Is responsible for the appearance of secondary sex characteristics of females.

Estrogen

Regulates menstruation

Progesterone

A fertilized egg

Zygote

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

Consists of a body and a cervix. The cervix protrudes into the vagina. Maintains an environment for accepting a fertilized egg.

Uterus

If no fertilized egg reaches the uterus, the lining is shed monthly in a process known as

Menstruation

The start of the menstrual cycle

Menarche

The end of cycle

Menopause