QUES: How would the universe look without gravity? It would have no planets and no stars. Thats how it looked when it was young. When the universe was young, there was only gas and dust. From this gas and dust, everything we now see was made. How were stars and planets created from just gas and dust? The answer is gravity. The same gravity that holds you down on Earth. The same force that causes your pencil to roll off your desk. The same force that causes it to fall to the floor. The invisible force of gravity caused dust and gas particles to be pulled together. This force is what formed all the objects in our solar system. This force formed the smallest moons. It also formed our Sun. This force caused more than just our solar system to form. It caused all the other solar systems to form. It caused the formation of all the galaxies of the universe.
Do you have any questions?
MY QUESTION: What force formed all of the objects in the solar system?

QUES: Take a look at this train in Figure 1.11. It looks very futuristic. What do you notice about it? Did you notice that the train has no wheels? How can a train have no wheels? It doesn't need wheels. It actually floats, or levitates, just above the track. Magnets enable the train to do this. This is not a normal train. This is a maglev train. The word maglev stands for magnetic levitation. Because it has no wheels, there is no friction. Some magnets hold the train up. Other magnets are used to move the train forward. This train can go very fast. It can reach speeds up to 480 kilometers (300 miles) per hour! Magnets are pretty cool. What exactly is a magnet? How is it able to exert such force?
Do you have any questions?
MY QUESTION: What do you notice about figure 1.11?

QUES: The Domestic Violence Legal Assistance Program fills the gap of legal resources for domestic violence survivors who can't afford an attorney. Domestic violence survivors in Jackson, Vicksburg, Hattiesburg, Oxford and Pascagoula can all get help. Julia Crockett, deputy director of Central Southwest Mississippi Legal Services Corp., said the program expects to help nearly 1,000 domestic violence victims. Crockett said legal help gives domestic abuse survivors a way to rebuild their lives. "They have been made to feel by the abuser that no one is going to help them do anything, so when they come to us they are desperate," she said. "Those who need legal help and don't get it feel totally lost. Because then they feel like they are forced to stay in that situation." Crockett said the program, funded by a $300,000 grant from the U.S. Justice Department, has no economic restrictions on who can get help. Legal services typically helps the poor. Gladys Bunzy, who said she was in an abusive relationship with a boyfriend for eight years, said such a program is long overdue and could be a lifeline for those escaping violent relationships. "When I finally made up my mind to leave, I had a restraining order put against him and that was $50 but that was $50 well spent to me," said Bunzy, 40. "For people who can't afford it, this will be a godsend ... If a woman knows she is going to get some help that will be a burden off her mind, if the law will help her keep that person away from her." Gwen Bouie-Haynes, project director of the Domestic Violence Services Center for Catholic Charities Inc., said often domestic violence survivors do not have the money to seek legal representation. "Legal assistance is a major issue for women fleeing a domestic violence situation," she said. "Often times women are in need of immediate legal assistance services for the protection of the mother and the child. To get a protective order you need to be represented by an attorney." Crockett said the pilot program was launched in 1998 at the Haven House Family Shelter Inc., a domestic violence shelter for women and children in Vicksburg. The program has helped victims in 90 court cases, and 150 legal counseling sessions have been held there.
Do you have any questions?
MY QUESTION: The director of what entity claims legal help gives domestic abuse survivors a way to rebuild their lives?

QUES: Renewable Energy Resource Sunlight Sunlight can be used to heat homes. It can also be used to produce electricity. This conversion is made possible by solar cells. However, solar energy may not always be practical. Some areas are just too cloudy. Example Solar panels on the roof of this house generate enough electricity to supply a familys needs. Moving Water Falling water can have a lot of energy. Its energy can be converted into kinetic energy. This energy can turn a turbine and generate electricity. The water may fall naturally over a waterfall or flow through a dam. A drawback of dams is that they flood land upstream. They can also reduce water flow downstream. Either effect may harm ecosystems. Wind Wind is moving air. It has kinetic energy that can do work. Wind turbines change the kinetic energy of the wind to electrical energy. Only certain areas of the world get enough steady wind. Many people also think that wind turbines are noisy and not very nice to look at.
Do you have any questions?
MY QUESTION:
What is the drawback of kinetic energy from hydro power?