Reading...
Play button
Play button
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;
17 Cards in this Set
- Front
- Back
- 3rd side (hint)
|
what causes the day and night
|
the earth's rotation
|
|
|
|
how many rotations does the earth have in 24 hours
|
one
|
|
|
|
when it is day for us, it is ___________ on the opposite side of the earth
|
night
|
|
|
|
when it is 12:00pm here it is _______ on the other side of the earth
|
12:00am
|
|
|
|
the seasons are caused by the earth's
|
tilt and revolution
|
|
|
|
the earth makes one revolution of the sun in
|
365 day or one year
|
|
|
|
in the northern hemisphere
winter for us means |
the northern hemisphere is farther from the sun
|
|
|
|
in the northern hemisphere
summer for us means |
the northern hemisphere is closer to the sun
|
|
|
|
in the northern hemisphere
fall and spring for us means |
the northern hemisphere is closer to the sun
|
|
|
|
the path that one object in space travels as it moves around another object
|
orbit
|
the earth does this with the sun
|
|
|
imaginary rod or pole around an object seems to spin
|
axis
|
|
|
|
the motion of an object in space around another object
|
revolution
|
the earth does this once a year
|
|
|
the sun shines most directly and intensely on the northern hemisphere.
|
summer
|
during this time it is winter in the southern hemisphere
|
|
|
caused by the tilt of the earth on the axis
|
season
|
winter spring summer and fall
|
|
|
the biggest star and the earth's primary source of heat and light
|
sun
|
|
|
|
the sun wind and water can be used to produce electricity. we can change solar energy into electricity with solar cells. plants trap solar energy to make food. the force of flowing water and moving air can eat used to generate electricity
|
natural sources of energy
|
|
|
|
dark areas that occur when light is blocked are called _________. our __________ are the longest in the early morning and late afternoon. our ________ are the shortest at noon because the sun is directly over us. the sun rises in the east and sets in the west. the sun appears low in the sky in the early morning and late afternoon.
|
shadows
|
|
