book #3 and #4 Flashcards
(15 cards)
What are the names of the layers of Earths atmosphere
Troposphere Stratosphere Mesosphere Ionospere Exosphere
What is one fact about a layer of the Earth’s atmosphere earlier
Exosphere- satellite orbit Ionosphere-Northern Lights are formed Thermosphere- least amount of air molecules Mesosphere- protection from meteors Stratosphere- ozone layer and jet stream Troposphere-where the weather is formed
What are three reasons why our planet Earth is the only planet in our solar system that we know is able to support life
- Liquid water
- breathable air
- right distance from the Sun ( temperature)
What do the words Emit and reflect mean? what objects in space Emit light? what objects in space reflect light
Imit means give off light
reflect means light bounces off of it
objects that emit light are: Sun and Stars
Objects that reflect light bar moons and meteors
Why is it harmful to look at the sun with your naked eye? what are two safe methods for viewing the Sun?
Because the sun gives off harmful ultraviolet rays, a welder’s mask or pinhole camera are safe for being in the sun.
What positions do the Earth Moon and the Sun have to be in for a partial or total solar eclipse to occur? draw a diagram.
EARTH———MOON———SUN
In a straight line
Why does the sun appear to move across the sky each day?
The Earth’s rotation makes it appear to move across the sky
what causes day and night?
The Earth’s rotation on its axis
What is the difference between direct and indirect (slanting) Rays from the Sun? what causes the Rays to become more or less Direct.
Direct rays are rays that are head on. indirect rays are rays that are spread out. the Rays become more and Less Direct because the way the Earth is tiltied.
What are the two reasons that Earth experiences for different seasons each year
The Earth’s revolution and tilt, and the indirect or direct rays
When does the summer solstice occur what happens to the hours of daylight on this date
June 21st, we have the most hours of daylight
When does the winter solstice occur what happens to the amount of daylight on this date
It occurs on December 21st we have the least amount of daylight
when does to fall equinoxes occur what happens to the amout of daylight on this date
it occurs on september 21 and there are 12 hours of daylight and 12 hours of night
when does the spring equinox occur what happens to the amout of daylight
it occurs on march 21 and there are 12 hours of daylight and 12 hours of night
how do the seasons compare in the northern hemisphere and southern hemispheres?
When it is winter in the northern hemisphere It is summer in the southern hemisphere
