Tip a plant over on its side, (a geranium is a good choice). Wait 2 weeks. What effect does gravity have on the growth of the plant?
Have the students experiment with a small gyroscope and/or a spinning top. Point out that the axis retains its orientation while the object is spinning. This principle is used to keep satellites in orbit.
While standing on a skate board, ask a student to throw a basketball or a jug filled with sand to another student. What happens? (The skate board must be parallel to the direction of the throw). This principle of action/reaction is the theory behind rocket propulsion.
Discuss the time it takes for the Moon to orbit the Earth; the shuttle to orbit the Earth, (about 90 minutes). What are your conclusions about the relationship between the height of the orbit and the length of time it takes to go around once?
Have the class find out the frequency ranges used by AM radio, FM radio, and amateur radio.
Have the students watch for a satellite passing overhead, just after sunset. It will look like a star but will move steadily. If it flashes, it's a plane.
Hold a brainstorming session on the hazards of "space" with your students. What problems does an astronaut face while living on a Space Station?
Have your students write a paragraph about how scientists have managed to protect humans in this hostile environment.
Ask students to write a journal entry. They should imagine that they are an astronaut on the Space Station on a day when one of the life support systems breaks down. In their journal entry, they should explore ways they tried to resolve the problems.
Ask the students to make a scale model of an altitude chart drawing in the following objects at the correct height.
Radius of Earth = 6400 km;
altitude of space shuttle orbit = 300 km;
altitude of geostationary satellite = 36,000 km.
Science and Technology 
-Vocabulary
