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
|
What is the difference between emit and reflect |
Emit : natural light for an object
Reflect : light bouncing off an object |
|
|
Why do stars appear to move in the night sky |
Because earth is spinning and revolving around the sun |
|
|
What are constellations |
A group of stars forming a pattern |
|
|
How can you view the sun safely |
1: #14 welders glasses
2: pinhole box |
|
|
What is a sundial? And how does it work? |
A Sundial is a device that tells the time of day by the position of the sun in the sky. It's a flat plate that casts a shadow onto the dial |
|
|
Why are there seasons? |
The tilt of the earths axis is the most important reason why there is seasons.
When the earth axis is tilted toward the earth it's summer
When the earths axis is tilted away from the sun it's winter
|
|
|
What are the spring and fall equinox, and the summer and winter Solstice |
Spring equinox is the first day of spring. It occurs when the sun passes the equator moving from the souther to northern hemisphere.
Summer solstice is the longest day of the year. Or the day with the most day light.
Winter solstice is the shortest day of the year, or day with the least sun light. |
|
|
What are the 8 phases of the moon? |
1: new moon 2: waxing crescent 3: first quarter 4: waxing gibbous 5: full moon 6: waning gibbous 7: last quarter 8: waning crescent |
|
|
What are the 8 other planets that revolve around the moon? |
1: Mercury 2: Venus 3: earth 4: Mars 5: Jupiter 6: Saturn 7: Uranus 8: Neptune |
|
|
What is earth satellite? Do other planets have satellites? |
Earths satellite is the moon. The moon orbits around earth and gives natural light |
|
|
Do other planets have satellites? |
Yes |
|
|
How do airplanes fly |
Airplanes have airfoil shaped wings. High air pressure hoes over the top of the wings and low air pressure goes under the plane and coases it to lift |
|
|
4 properties of air |
1: takes up space 2: air has mass 3: Air exerts pressure 4: air can be compressed |
|
|
What effects does hot air have on objects |
Hot air lifts objects. For example a hot air ballon needs to have hot air in its envelope to lift |
|
|
What's is oxidation |
Oxidation is when air gets in fruit and it goes rotten Apple cores get rotten from oxidation if the core has been bitten i |
|
|
What's does streamlineing do to objects in terms of flight |
For example a plane is streamlined in the air when it's flying. Streamlining is when a object is increasing speed in a ease of movement |
|
|
4 main components of air |
Nitrogen Oxygen Carbon dioxide Argon |
