Science+Fair+QL

//**How does gravity affect plant growth**//

Hypothesis: The plant that is on the top side of the towel will grow faster

Notes:

Source 1: http://www.bioedonline.org/lessons-and-more/lessons-by-topic/plants-form-function/how-does-gravity-affect-root-growth/

I know this is a valid source because it was made by Science teacher resources from Baylor College of medicine


 * Plants respond directly to Earth’s gravitational attraction, and also to light.
 * Plants grow away from the core of the earth, and grow upward.
 * Roots grow downwards towards the core of the earth and away from the light.
 * Plants' growth response to gravity is called gravitropism
 * Plants' growth response to light is phototropism
 * They are both controlled by Plant hormones
 * Roots also will change direction when a plant is tipped on its side
 * They also change direction when they collide with a dense object such as a rock

Source 2: [|Interesting Gravity Facts - Acceleration, G-Force, Mass, Formula, Law, Orbit]

I know this is a valid website because it is made by a person who know a lot about the topic and is very well informed.
 * Objects with mass are attracted to each other, this is known as gravity.
 * Gravity keeps Earth and the other planets in our solar system in orbit around the Sun. It also keeps the Moon in orbit around Earth.
 * It is thought that Isaac Newton’s theories on gravity were inspired by seeing an apple fall from a tree
 * The human body can handle increased g-forces as seen in activities such as dragster races, airplane acrobatics and space training.
 * Tides are caused by the rotation of the Earth and the gravitational effects of the Moon and Sun
 * The highest known acceleration voluntarily experienced by a human is 46.2 g by g-force pioneer John Stapp.

Source 3: []


 * Start to grow seeds indoor for 6 to 8 weeks
 * select an area where it is full of sunlight and good soil and they should receive at least 6 hours of sunlight
 * Before transplanting them outside till the soil to about one foot and mix in aged manure, compost, or fertilizer
 * Plant each seed two feet apart from each other
 * Water well to reduce shock of roots
 * Water about 2 inches per week
 * Fertilize two weeks after the first day you plant outside
 * Tomato hornworms and whiteflies are the most common insect to eat your tomatoes.
 * Leave tomatoes on vine as long as possible
 * when growth is to fast it will crack

Source 4: "Gravity." //Florida Science. // New York, NY: Glencoe/McGraw-Hill, 2005. . Print

Source 5: []
 * Three quarters of the Earth is covered in water
 * The human body is 60% water
 * Human cant survive a week without water
 * only 1% of freshwater is avalible for humans to drink


 * Works Cited **

Moreno, Nancy P. "BioEd Online." //How Does Gravity Affect Root Growth? - //. N.p., n.d. Web. 25 Sept. 2013.  <span style="background-color: #ffffff; font-family: 'Times New Roman',Times,serif; font-size: 16px;">Smith, Rene. "Interesting Gravity Facts - Acceleration, G-Force, Mass, Formula, Law, Orbit." //<span style="background-color: #ffffff; font-family: "Times New Roman",Times,serif; font-size: 16px;">Interesting Gravity Facts - Acceleration, G-Force, Mass, Formula, Law, Orbit //<span style="background-color: #ffffff; font-family: 'Times New Roman',Times,serif; font-size: 16px;">. N.p., n.d. Web. 25 Sept. 2013.
 * This website is created by teachers at the Baylor College of Medicine and is the center of educational outreach.
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 16px;">Website is created by someone who was studying the topic for four years at Canterbury University and knows what they are talking about.

<span style="background-color: #ffffff; font-family: 'Times New Roman',Times,serif; font-size: 16px;">"Tomatoes." //: Planting, Growing and Harvesting Tomato Plants//. The Old Farmer's Almanac, n.d. Web. 25 Sept. 2013.
 * <span style="font-family: 'Times New Roman',Times,serif; font-size: 16px;">The Old Farmer's Almanac was made a long time ago and was created by people who know a lot of plants and how you should grow them.

<span style="background-color: #ffffff; font-family: 'Times New Roman',Times,serif; font-size: 16px;">Whitehead, Bruce. "Water Facts." //<span style="background-color: #ffffff; font-family: 'Times New Roman',Times,serif; font-size: 16px;">Water Facts | The Water Information Program //<span style="background-color: #ffffff; font-family: 'Times New Roman',Times,serif; font-size: 16px;">. N.p., n.d. Web. 17 Oct. 2013.
 * <span style="font-family: 'Times New Roman',Times,serif; line-height: 24px;">This website is created by people who have researched a topic enough to write about.

<span style="background-color: #ffffff; display: block; font-family: "Times New Roman",Times,serif; font-size: 16px;">