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;
34 Cards in this Set
- Front
- Back
|
When was the Earth formed? |
4.5 billion years ago |
|
|
What are the terrestrial planets? |
MVEM |
|
|
What is the largest of the terrestrial planets? |
Earth |
|
|
What is the densest and most massive of the terrestrial planets? |
Earth |
|
|
What is the only planet where water exists not only as surface liquid, but also as a solid and gas? |
Earth |
|
|
What are the gas giants in our solar system? |
JSUN |
|
|
Gas giants are predominantly made of... |
Hydrogen (but Uranus and Neptune contain a large portion of ice) |
|
|
What is the average distance of the Sun from hte Earth? |
93 million miles |
|
|
What is the average speed of the Earth in orbiting Sun? |
18.5 miles per second |
|
|
What is the diameter of the Earth? |
7.926 miles |
|
|
What is the tilt of axis of the Earth? |
23.5 degrees |
|
|
What is the length of a year in the Earth (in days)? |
365.25 days |
|
|
What is the length of a day of the Earth? |
23 hrs. and 56 minutes |
|
|
What is the gravity of the Earth? |
2.66 times of Mars |
|
|
What is the avergae temperature of the Earth? |
57 degrees F (13.88 degrees C) |
|
|
What is the atmosphere composition of the Earth? |
Nitrogen, Oxygen, Argon, Others |
|
|
What is the tallest mountain (above sea level)? |
Mount Everest (29.029 feet) and 8.848 meters high |
|
|
What is the circumference of the Earth in miles/diameters? |
24, 901 miles/ 40,075 km |
|
|
(TRUE OR FALSE) Depending on where you stand on the globe, you could be spinning through space at just over 1000 miles per hr. |
TRUE |
|
|
(TRUE OR FALSE) People standing on the North or South Pole move the fastest, while people at the Equator would be perfectly still. |
TRUE |
|
|
What are the seven continents of the Earth? |
|
|
|
What are the five oceans of the Earth? |
1. Atlantic 2. Pacific 3. Indian 4. Southern 5. Arctic |
|
|
What is the central core made of? |
Iron and Nickel |
|
|
What are the elements that made the outer crust? |
Oxygen (46%), Silicon (27.7%), Aluminum (8.1%), Iron (5%), and Calcium (3.5%) |
|
|
The Earth's movement through _____ affects life on Earth. |
Space |
|
|
We experience _____ because of this movement on the Earth's _____ known as rotation. |
1. day and night 2. axis 3. rotation |
|
|
It takes the Earth _____ to rotate one time in which we experience _____. |
23 hours and 56 minutes Day and Night |
|
|
The Earth's axis is an invisible line that _____ the Earth through both _____. |
intersects North and South Pole |
|
|
The Earth moves along a path around the ______. |
Sun |
|
|
The path around the Sun is known as an ______. |
Orbit |
|
|
One complete trip on the orbit is known as a _____. |
Revolution |
|
|
It takes the Earth _____ to complete it's hourney around the Sun. |
365.25 days |
|
|
Every _____, we take the extra 0.25 days from the previous years, combine them and add an extra day to the calendar called ______. |
1. 4 years 2. Leap year |
|
|
It is an imaginary surface through the planet's orbit around the sun. |
Ecliptic plane |
