Lesson 1

Question 1

Six Things That Make Life on Earth Possible (FSRRBO)

Answer 1

Far From Hazard
Sun is stable and long-lasting
Right distance from the sun
Right stuff to host dynamic core
Big moon to stabilize axial wobble
Ozone layer to block harmful rays

Question 2

helps avoid the dangerous part of the galaxy.

Answer 2

solar system’s circular orbit

Question 3

contains a massive black hole and releases consistent
bursts of radiation.

Answer 3

galactic core

Question 4

collapsing stars

Answer 4

supernovae

Question 5

The presence of this, farther out in the solar system blocking Earth from much of the incoming debris,

Answer 5

Jupiter

Question 6

Life expectancy of sun

Answer 6

not for another five billion years

Question 7

Energy given by the sun

Answer 7

239 trillion horsepower, about 35,000 horsepower

Question 8

Distance from Earth to Sun

Answer 8

93 million miles or 150 million kilometers away

Question 9

Earth orbits what?

Answer 9

Goldilocks zone

Question 10

planet receives enough energy to allow water to exist as a liquid on its surface. Too far, and the vital compound stays locked up as ice. Too close, and the water would rapidly evaporate into the atmosphere.

Answer 10

Goldilocks zone

Question 11

The Earth is the only planet with huge bodies of water with?

Answer 11

70%

Question 12

is unique because it absorbs large amounts of heat without much alteration in its temperature. Its absorption speed is extremely rapid—about ten times as fast as steel.

Answer 12

Water

Question 13

In this time period, the seas rapidly soak up a great deal of heat, thus the Earth stays fairly cool.

Answer 13

Day

Question 14

In this time, the oceans release the vast amounts of heat that they soaked up during the day, which combined with atmospheric effects, keeps the surface from getting too cold.

Answer 14

Night

Question 15

Radioactive elements that power Earth (PUT)

Answer 15

potassium, uranium, and thorium

Question 16

serves to deflect most of the solar wind, whose charged particles would otherwise strip away the ozone layer that protects the Earth and the life on it from harmful ultraviolet radiation.

Answer 16

Magnetic Field

Question 17

added oxygen to the atmosphere and created a high-altitude layer of ozone that shielded early land species from lethal radiation.

Answer 17

Ancient plantlike organisms in the oceans

Question 18

is a gas in the atmosphere that protects everything living on the Earth from harmful ultraviolet (UV) rays from the sun.

Answer 18

Ozone (O3)

Question 19

acts as a shield to absorb the UV rays and keep them from doing damage at the Earth’s surface.

Answer 19

ozone layer

Question 20

The mixture of gases found in the atmosphere (NOA)

Answer 20

Nitrogen = 78%
Oxygen = 21%
Argon = 0.9%.