Seasons
Earth’s seasons aren’t determined by the distance from the sun, but by Earth’s axis _______________________.
tilt
Earth's tides are caused by
gravity
Chemical Notation for water
H2O
What are criteria and constraints?
criteria - requirements
constraints - limitations
What is the name of the galaxy we live in?
Milky Way
Earth’s longest and shortest days of sunlight are called ____________________. They happen during the summer and winter, around the 21st of June and December.
solstice
How many tides are in 1 day?
How long does it take to change tides?
4 tides
6 hours to change
Particles of a gas are
spread out, fast moving
chemical reaction that releases energy like an MRE
exothermic
What color of light has the highest energy: red, blue, or green?
Blue
Earth has equal days of sunlight (12 hours) during their ____________________. They occur in the spring and fall, around the 21st of March and September.
equinox
Weak tides where the Sun, Earth, and Moon are perpendicular are called __________________ tides.
neap
What does solubility mean? Example?
dissolves like sugar
Mass = 6
Volume = 2
What is the density?
3
What is the largest planet in the solar system?
Jupiter
How long is one rotation?
How long is a revolution?
24 hours
365 days
Strong tides that are much higher or lower than normal when the Earth, Sun, and Moon are in a straight line are called _______________ tides.
spring
How does a thermometer work?
particles of mercury expand or condense
What is the difference between a physical and chemical change? Provide an example
chemical - baking a cake
physical - ripping paper
What do you call a substance that speeds up a chemical reaction?
Catalyst
Why does Summer usually have warmer temperatures and Winter is often cold with snow?
amount of direct sunlight
orbiting around the Earth, the Moon’s gravitational pull is stronger on the side closest to it
What is needed to spark a chemical reaction?
energy
3 signs of a chemical change?
color, odor, state of matter, bubbles
What scientist discovered gravity?
Sir Isaac Newton