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
12345 [234]
3 years ago
5

Use the drop-down menus to complete the statement about Earth’s magnetism.

Physics
2 answers:
Rufina [12.5K]3 years ago
6 0

Answer:

core, iron, churning

Explanation:

Nataly [62]3 years ago
5 0

Answer:

The Earth's magnetism is generated in the core, which is composed of iron that is constantly churning

Explanation:

Magnetic fields are produced by charges in motion, therefore by currents.

The outer core of the Earth consists mainly of melted iron that is in constant motion. This iron in motion actually acts as a giant current, and therefore it is responsible for the creation of the Earth's magnetic field.

The magnetic field of the Earth is very weak, in fact its magnitude is on average between 25 and 65 microtesla (for comparison, normal magnets can even produce magnetic fields of a few millitesla).

However, its role is very important for the Earth: in fact, it provides a shield that blocks most of the harmful radiation coming from the Sun.

You might be interested in
An unmanned spacecraft leaves for Venus. Which statements about the spacecrafts journey are true?
Yuri [45]
<span>The weight of the spacecraft keeps changing. 
</span>
<span>The mass of the spacecraft remains the same.

These are the correct answers</span>
4 0
3 years ago
Read 2 more answers
Which of the following is an effect of the electric force?
stich3 [128]

As we know that two charges exert force on each other when they are placed near to each other

The force between two charges is given as

F = \frac{kq_1q_2}{r^2}

here we know that

q_1, q_2 = two different point charges

r = distance between two point charges

also we know that two similar charges always repel each other while two opposite charges always attract each other

so here correct answer would be

<em>A. A positive and negative charge attract each other.</em>

6 0
2 years ago
Read 2 more answers
A block of wood has a mass of 30 g and has the following side measurements; length = 5 cm, width = 4 cm, height = 3 cm. What is
Studentka2010 [4]

mass/volume

30/3x4x5

10/4x5

2/4

.5g/cm3

4 0
3 years ago
A ball has a mass of 0.1 kg and an initial velocity of 20 m/s. The ball is given an acceleration of 30 m/s2 for 5 s. What is the
djverab [1.8K]

Answer:

acceleration = v-u /t

30- 20/5

= 10/5 = 2m/sec²

Force = mass * acceleration

Force = 0.1 * 2

Force = 0.2 Newton

6 0
2 years ago
Read 2 more answers
Sasha sits on a horse on a carousel 3.5 m from the center of the circle. She makes a revolution once every 8.2 seconds. What is
Leokris [45]

Answer: 2.7 m/s

Explanation:

Given the following :

Period (T) = 8.2 seconds

Radius = 3.5 m

The tangential speed is given as:

V = Radius × ω

ω = angular speed = (2 × pi) / T

ω = (2 × 22/7) / 8.2

ω = 6.2857142 / 8.2

ω = 0.7665505

Therefore, tangential speed (V) equals;

r × ω

3.5 × 0.7665505 = 2.6829268 m/s

2.7 m/s

6 0
3 years ago
Other questions:
  • As the temperature increases the number of effective collisions between reacting particles in a chemical reaction
    6·1 answer
  • represents the space-time, speed-time and acceleration-time graphs for a ball pulled upwards with a speed of 10 m / s from 1 met
    6·1 answer
  • A woman exerts a constant horizontal force on a large box. As a result, the box moves across a horizontal floor at a constant sp
    12·1 answer
  • THIS IS SCIENCE .What is most likely to happen during weathering? Moving of sediment Breaking down of rocks Laying down of sedim
    13·1 answer
  • A garden roller is pulled with a force of 200N, acting at an angle of 50 degree with the ground level.find the force pulling the
    9·1 answer
  • PLEASE HELP I NEED THE CORRECT ANSWER TODAY
    6·1 answer
  • Fast food meals are typically high in all except 1 fat 2 calories 3 sodium 4 fiber
    13·1 answer
  • Which equation best summarizes Newton’s 2nd law:
    13·1 answer
  • A 1-kilogram stone is being dropped from a bridge 100 meters above a gorge.
    7·2 answers
  • A bullet of mass 10g is fired from a gun. The bullet takes 0.003s to move through its barrel and leaves it with a velocity of 30
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!