Lily's Science Methods 2 Blog

  For this week's lab, we tried to make a timeline of Geological Time. The above video is my first attempt before we talked about it as a class and I realized I was way off. The attached image of Geological Time shows Earth as a clock which really helped me understand. I had no idea that humans have been around for such a short period of time!

Milky Way- Our galaxy is called the Milky Way. It has this name because it appears in the sky like a long white strip, looking kind of like spilled milk. The Milky Way is a  large spiral-shaped galaxy that contains hundreds of billions of stars. Galaxy-  a collection of billions of stars, gas, and dust held together by gravity in space. Our solar system is a small piece of our galaxy.  Comet : A frozen ball of gas, rock, and dust that orbit the Sun. When a comet gets close to the Sun, it heats up and the gas and dust form a tail. Meteoroid : A small rock in space that orbits around the Sun. Most meteors have broken off larger objects such as asteroids or comets. They can be as small as a grain of sand or as large as a pickup truck. Meteor : The streak of light that is caused when a meteoroid enters Earth’s atmosphere and burns up due to friction. Also known as a shooting star. Meteorite : A meteoroid that survives its trip through the atmosphere and lands somewhere on Earth. The impact

Geocentrism–the theory that Earth is at the center of the solar system, and the Sun and other planets revolve around it Heliocentrism–the theory that the Sun is at the center of the universe and Earth orbits the Sun. Equinoxes (which sounds like the word equal) marks the day in which all of Earth receives an equal amount of sunlight–12 hours. This equal amount of sunlight occurs when the Equator is directly in line with the Sun.  The Spring Equinox happens around March 20th and the Autumn Equinox happens around September 23rd each year. Solstices mark the days of the year in which a hemisphere receives the least amount of sunlight (aka the shortest day of the year) and the most amount of sunlight (aka the longest day of the year). These days occur when one of the tropic lines is directly in line with the Sun. Winter Solstice= Day with LEAST amount of sunshine Summer Solstice= Day with MOST amount of sunshine Eclipses: when light is blocked. There are two types of eclipse that we can se

-This week's lab involved making ramps to see how fast we could get a ball to roll down it. My group began with the Control to make sure we had something to refer back to once we started changing our variables. I will attach our data below, but out of all of the things we changed, the only thing that made it go faster was the angle of the ramp and the size of the ball. We found that the higher the angle of the ramp, the faster it went. We also found that the marble rolled the fastest out of all of the balls.  But why is this? What theory makes this work?  Newton's 1st Law of Motion                                                                                                              - An object will not change its motion unless acted upon by an unbalanced force.   - An object at rest will stay at rest, an object in motion will stay in motion.                   - Objects with greater mass have more inertia, meaning it takes more force to change their motion. Newton's 2