1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kow [346]
3 years ago
12

Which three statements about electromagnetic radiation are true?

Biology
2 answers:
TEA [102]3 years ago
6 0
Light is a form of EM radiation.
EM radiation has no mass (it's just energy packets called photons).
EM radiation can travel through a vacuum. (The speed of light in a vacuum is called c and is around 300,000 m/s).

Hope this helps!
WARRIOR [948]3 years ago
3 0

Answer:

  • Light is a kind of electromagnetic radiation.
  • Electromagnetic radiation has no mass.
  • Electromagnetic radiation can travel through a vacuum.

Explanation:

Electromagnetic radiation spreads in space. It has a magnetic field and an electric field that generate each other and propagate perpendicularly to each other and in the direction of propagation of energy, thus transporting energy in the form of electromagnetic radiation. Electromagnetic radiation varies with the frequency of the wave. The light visible to human eyes is electromagnetic radiation, just like x-rays, the only difference between these two forms of radiation is in the frequency range that the human eye can see, that is, x-rays have a frequency range that is out of reach of human vision. The waves in the microwave oven are also electromagnetic waves.

In summary, we can say that:

  • Light is a kind of electromagnetic radiation.
  • Electromagnetic radiation has no mass.
  • Electromagnetic radiation can travel through a vacuum.
You might be interested in
Which of these is not a characteristic of stomata?
EleoNora [17]

Answer:

I believe its C

Explanation:

Hope this helps!  

6 0
3 years ago
Read 2 more answers
Which of the following are NOT functions of the spinal cord?
maksim [4K]

Answer:

Reflexes are not a function of the spinal cord.

Explanation:

The spinal cord is part of the central nervous system and is made up of neurons that go along it (from the end of the brain stem almost to the bottom of the spine).

The spinal cord receives incoming messages from the peripheral nervous system (including the sensory neurons) and pass on messages from the brain to efferent neurons (motor neurons at muscles).

The spinal cord contributes to learning as it passes on the info received from sensory neurons (that there is an obstacle in the path) to the brain and passes on the response from the brain to the muscles (to lift the foot up higher).

The spinal cord is essential for integration as it passes on sensory information  to the brain to determine motor output.

Reflexes are when sensory information is quickly sent straight to motor neurons to move. It does not need to go to the brain (hence does not need to go to the spinal cord) for the reaction as it would be too slow. This is seen when someone who is paraplegic (paralysed at lower torso) can still move their leg in response to the doctor tapping their knee even when they cannot forcibly move their legs.

Therefore reflexes are not a function of the spinal cord.

4 0
3 years ago
Read 2 more answers
A very active person uses a large amount of energy and therefore has a high
mamaluj [8]
A) a temperature is regulated by the body: so, not.

b) - rather not, most likely cholesterol level would be low

c) this is rather intedependent - a person can be active even without a fat diet.

d) I think this is the best answer. Metabolism is the exchange of energy in food into the energy that people use.
7 0
3 years ago
Read 2 more answers
If a biologist wanted to analyze the evolutionary relationship in a gene that is found in both eukaryotes and bacteria, which of
riadik2000 [5.3K]

Answer:

A) histone coding genes

Explanation:

Histones are the proteins involved in the packing of DNA in eukaryotes. They are positively charged proteins and are not found in bacteria. To analyze the evolutionary relationship in a gene between eukaryotes and bacteria, one must choose the gene present in both of them. The tRNA, rRNA and hexokinase encoding genes are common to both bacteria and eukaryotes. Therefore, one of these genes may be chosen for the study. However, histone encoding genes are not present in the genomes of bacteria. Therefore, the study of the histone encoding gene would not be useful for the mentioned purpose.

8 0
4 years ago
How and why -Name three common mixtures
Bogdan [553]
Its simple.. cereal, salad,soup... the teacher wants you to have three common mixtures because the teacher wants to see if you know what things are mixtures in your life. Why i choose CSS/ Cereal,salad,soup because You can drain the milk or take out the cereal.. from cereal, and with a salad you can take out one of the things Ex. Carrot, tomato, chicken, cheese (very hard but you can do it) e.t.c. and soup because you can take out the veggies or meat or noodles.
7 0
3 years ago
Other questions:
  • How does a perceived lack of control affect health?
    15·1 answer
  • Which physician specializes in treatment of the gums?
    9·2 answers
  • Which of the following statements is true?
    13·1 answer
  • What organelle makes them autotrophs or heterotrophs
    12·1 answer
  • Contrast primary succession and secondary succession. Give an example of each.
    8·1 answer
  • What holds the base pairs of dna together
    13·1 answer
  • Which of the following best describes the characteristics of less fertile soils, increase in disease-carrying mosquitoes, and fl
    6·2 answers
  • Does air entering a low pressure region fall and cool
    7·1 answer
  • A place where animals and plants are protected is called
    14·1 answer
  • What is the ability to rhythmically depolarize without outside stimulation called?.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!