Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
What shape is the earth? |
The shape of the earth is an oblate spheroid. The earth rotates centrifugal forces that cause the earth ro bugle out.Centrifugal forces is an inertial force that appears to act on all objects when viewed in a rotating frame of reference.The shape of the earth is an oblate spheroid. The earth rotates centrifugal forces that cause the earth ro bugle out.Centrifugal forces is an inertial force that appears to act on all objects when viewed in a rotating frame of reference.The shape of the earth is an oblate spheroid. The earth rotates centrifugal forces that cause the earth ro bugle out.Centrifugal forces is an inertial force that appears to act on all objects when viewed in a rotating frame of reference. The shape of the earth is an oblate spheroid. The earth rotates centrifugal forces that cause the earth ro bugle out.Centrifugal forces is an inertial force that appears to act on all objects when viewed in a rotating frame of reference.The shape of the earth is an oblate spheroid. The earth rotates centrifugal forces that cause the earth ro bugle out.Centrifugal forces is an inertial force that appears to act on all objects when viewed in a rotating frame of reference.The shape of the earth is an oblate spheroid. The earth rotates centrifugal forces that cause the earth ro bugle out.Centrifugal forces is an inertial force that appears to act on all objects when viewed in a rotating frame of reference. The shape of the earth is an oblate spheroid. The earth rotates centrifugal forces that cause the earth ro bugle out.Centrifugal forces is an inertial force that appears to act on all objects when viewed in a rotating frame of reference.The shape of the earth is an oblate spheroid. The earth rotates centrifugal forces that cause the earth ro bugle out.Centrifugal forces is an inertial force that appears to act on all objects when viewed in a rotating frame of reference.The shape of the earth is an oblate spheroid. The earth rotates centrifugal forces that cause the earth ro bugle out.Centrifugal forces is an inertial force that appears to act on all objects when viewed in a rotating frame of reference. |
|
|
|
What is the mean diameter of the Earth? |
13 000km |
|
|
|
What are the features of the crust? |
The continental layer of rhe crust is 30- 50 km thick. The oceanic layer of the crust in 5-10 km thick, its quite dense : basalt, diabetes, GaboroThe continental layer of rhe crust is 30- 50 km thick.Less dense than oceanic: graniteTemperature range: 200-400°C at Mantle edge.It consists of 15 to 20 moving tectonic plates. The oceanic layer of the crust in 5-10 km thick, its quite dense : basalt, diabetes, GaboroThe continental layer of rhe crust is 30- 50 km thick.Less dense than oceanic: graniteTemperature range: 200-400°C at Mantle edge.It consists of 15 to 20 moving tectonic plates. The oceanic layer of the crust in 5-10 km thick, its quite dense : basalt, diabetes, GaboroThe continental layer of rhe crust is 30- 50 km thick.Less dense than oceanic: graniteTemperature range: 200-400°C at Mantle edge.It consists of 15 to 20 moving tectonic plates. The oceanic layer of the crust in 5-10 km thick, its quite dense : basalt, diabetes, GaboroThe continental layer of rhe crust is 30- 50 km thick.Less dense than oceanic: graniteTemperature range: 200-400°C at Mantle edge.It consists of 15 to 20 moving tectonic plates. Less dense than oceanic: granite Temperature range: 200-400°C at Mantle edge. It consists of 15 to 20 moving tectonic plates. |
|
|
|
What are the features of the Mantle? |
67% of the mass of the Earth 84% of the volume of the Earth Tectonically active Mostly solid, but in geological time behaves like viscous liquid. It has a thickness of 2,900 km |
|
|
|
What are the features of the outer core? |
The outer core is made up of iron and nickel. It's liquid Is about 2200 km thick Responsible for earths magnetic field |
|
|
|
What are the features of the inner core? |
70% radius of the moon 20 % radius of the Earth A solid ball of iron and nickle The extreme temperatures and pressure solidify the metals |
|
|
|
What are the astronomical reference points? |
Tropic of Capricorn Tropic of cancer Arctic circle Antarctic circle Prime meridian North and South pole |
There are 7 reference points |
|
|
Why is the sky blue? |
Due to a process called Rayleigh scattering, the sky's blue colour is due to the white sunlight splitting as it enters our atmosphere and interacts with the nitrogen and oxygen-with blue being the colour that gets scattered the most around |
|
|
|
What is skyglow? |
Sky glow is an increase in the apparent brightness of the night sky that can serve to reduce visibility for astronomical observation. |
|
|
|
Why do stars twinkle and planets do not? |
Celestial objects that do not twinkle in the sky is because their solid angle in the sky is large enough that the light from them can reach our eye without being distorted.Stars in the sky's angular size is so small because of how far away they are that when they pass through the atmosphere, turbulence in the atmosphere causes the distortion of the stars. Celestial objects that do not twinkle in the sky is because their solid angle in the sky is large enough that the light from them can reach our eye without being distorted.Stars in the sky's angular size is so small because of how far away they are that when they pass through the atmosphere, turbulence in the atmosphere causes the distortion of the stars. |
|
