what is an aurora? | Quizalize

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what is an aurora? | Quizalize

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what is an aurora?

Quiz by Miguel Ángel Crespín Aguilera

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Q 1/20
Score 0
What shields the Earth from the solar winds?
30
Atmosphere
Magnetosphere
Ozone layer
Hydrosphere
Q 2/20
Score 0
Where do the protons and electrons creating the northern lights depart from?
30
Earth's atmosphere
Sun's corona
Moon's surface
Neptune's orbit

20 questions

Q.

What shields the Earth from the solar winds?

1

30 sec

Q.

Where do the protons and electrons creating the northern lights depart from?

2

30 sec

Q.

What event occurs when the Sun shoots out a massive ball of plasma into the solar wind?

3

30 sec

Q.

What are photons?

4

30 sec

Q.

What determines the colors that appear in the sky during polar lights?

5

30 sec

Q.

Why is nighttime ideal for viewing the polar lights?

6

30 sec

Q.

What are excited nitrogen atoms responsible for in the northern lights?

7

30 sec

Q.

What are responsible for the green and red colors in the northern lights?

8

30 sec

Q.

Where are the polar lights best seen?

9

30 sec

Q.

What produces the dazzling light show of the polar lights?

10

30 sec

Q.

What is responsible for the creation of the northern and southern lights?

11

30 sec

Q.

Where do the protons and electrons creating the northern lights depart from?

12

30 sec

Q.

What prevents the solar wind from traveling straight into Earth?

13

30 sec

Q.

What event occurs when the Sun shoots out a massive ball of plasma into the solar wind?

14

30 sec

Q.

At what distance above the Earth's surface do the Sun's particles meet up with oxygen and nitrogen atoms?

15

30 sec

Q.

What do excited oxygen atoms produce in the aurora?

16

30 sec

Q.

What determines the colors that appear in the sky during the Aurora?

17

30 sec

Q.

What type of energy is emitted by excited atoms in the atmosphere?

18

30 sec

Q.

Why is nighttime ideal for viewing the Aurora?

19

30 sec

Q.

Where are the polar lights best seen?

20

30 sec

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What is an earthquake? Would you be surprised to learn that several million earthquakes happen every year? Seriously. Most are so small in magnitude or size that we cannot even feel them. In fact, only 20 earthquakes are efficiently reported each year in the United States Geological Survey. Wow! That is a huge difference! The Earth has four major layers. Inner core, outer core, mantle, and crust. Think of the crust and top of the mantle like the skin of the earth. This skin is made up of different pieces of rock called tectonic plates. There are about 15 major slabs that join together, kind of like a puzzle. The edges around the tectonic plates are called plate boundaries. These massive pieces of rock slide back and forth under the Earth's surface, bumping up against each other and creating a lot of tension. This tension and movement create faults, which are basically huge cracks in the rock. When the faults get stuck, they build up pressure. And when they get unstuck, you guessed it, an earthquake. So basically, an earthquake is caused by the shifting and sliding of tectonic plates on the Earth's upper mantle and crust. There are three ways that tectonic plates shift or slide. They are subduction, lateral sliding, and spreading. Subduction happens when plates crash into each other. This can cause one plate to slide under another and be destroyed. Or the edges of the plate may rise up and form mountains. Lateral sliding means that the plates slide alongside each other, which can create lots of friction. And like you might have guessed, spreading happens when plates move apart from each other. When they do, melted rock between the plates rises and cools, forming new crust. Here's an interesting fact. Nearly 90% of all earthquakes begin in the Pacific Ocean, in an area called the Ring of Fire. It's called the Ring of Fire because along with earthquakes, it's filled with many active volcanoes. More than 450! Earthquakes can be powerful enough to change the surface of the earth and can do a lot of damage. And sometimes earthquakes can even cause other natural disasters, like avalanches, landslides, and tsunamis. Pretty wild, right? The epicenter is the location of an earthquake on the Earth's surface. The closer you are to the epicenter, the more of the earthquake you will feel. Earthquakes lose intensity as they travel away from the epicenter. Scientists measure the intensity of an earthquake using a special device called a seismograph. Seismometers detect and measure the vibrations given off by an earthquake. Magnitude is the number given to record the size of an earthquake. For example, a magnitude 5.5 is considered moderate. Above 8.0 is considered a major earthquake and we see one every year or two. Earthquakes measured at 2.5 or less are usually not felt, but can be recorded. And believe it or not, there are millions that happen each year. You can make a model of a seismograph at home, and we are going to show you how. It's activity time! You can print off directions for this one on our website at learnbright.org. You'll need a cardboard box, string, a plastic cup, a marker, small heavy objects, a long strip of paper, and a friend because this is an activity for at least two people. Now comes the fun part. One friend shakes the box, alternating between hard and soft and slow and fast, while the other friend is pulling the strip of paper through the bottom. Watch the marker as it records the movement. This is exactly what a seismograph does during an earthquake. So, in a way, we have not only created our own seismograph, but our own earthquake as well. Now, we can analyze the data just like scientists. Can you tell how hard the box was shaking based on the line? Can you tell when it was barely shaking at all? You are on your way to becoming a seismologist. A seismologist is a person that studies earthquakes. It's pretty cool to watch the process, but it's even more exciting to do it yourself. You can head on over to our website to get detailed instructions for this activity. Just download the lesson plan and as always have fun! Hope you had fun learning with us! Visit us at learnbright.org for thousands of Hope you had fun learning with us! Visit us at learnbright.org for thousands of free resources and turnkey solutions for teachers and homeschoolers.