Around the Room Review- Electromagnets, Mass, Gravity, & Weight 3-2-17 Get ready for bell work!

At the center of our Milky Way galaxy, there is a super-massive black hole. The gravity from this black hole is tremendous. Yet planet Earth is in no danger from this huge black hole. Select the answer that correctly explains this. a. This black hole’s mass is 3 million times greater than our sun. So it is no danger to us. b. The affect of gravity decreases over distance, and this black hole is very far away. c. Unlike other celestial objects, black holes do not have any gravity.

2. Mass is a measure of the amount of matter in an object. Weight is the measure of gravitational force exerted on an object. Which property of an object will be different on the moon than it is on Earth? a. mass c. Weight b. chemical structure d. pH level

3. An astronaut is in orbit about planet Jupiter which has more mass than any other planet in our solar system. In Jupiter’s orbit he weighs 912 N (Newtons). Then he travels back home to planet Earth.

4. On Earth an astronaut has a mass of 70 kg (kilograms), and her weight is 700 N (Newtons). She travels to Mars which is smaller and less massive than Earth. What would her weight be on Mars? a. Greater than 700 N. c. Greater than 70 kg. b. Less than 700 N. d. Less than 70 kg.

5. Electromagnets are frequently used in many modern devices, and students can a build a simple electromagnet with common items sold in most hardware stores. The construction of an electromagnet would be best completed by introducing a current into loops of wire wrapped around...? popsicle stick a plastic rod an iron nail. a glass square

A student builds the electromagnet shown in the diagram below A student builds the electromagnet shown in the diagram below . How can the student increase the strength of the magnetic field around the electromagnet? a. Use a wire with a smaller diameter. b. Remove the nail from within the coil. c. Move the battery closer to the nail. d. Increase the number of loops in the coil.

7. Closely examine the two examples shown above. Which of these electromagnets would be able to lift more paper clips and why? a. Example W would lift more, because it has three batteries. b. Example X would lift more, because it has less coils around the iron core. c. Example X would lift more, because it has more coils around the iron core. d. Example W would lift more, because it has less coils around the iron core.

Trouble with “Gravity” https://www.youtube.com/watch?v=AjfOm_W- UaY​ NASA's new frontier, and the Trouble with "Gravity" - YouTube Hank describes how astronomers used a technique called gravitational lensing to find the most distant galaxy ever detected -- and how NASA is embarking on a ... Watch now...

At the center of our Milky Way galaxy, there is a super-massive black hole. The gravity from this black hole is tremendous. Yet planet Earth is in no danger from this huge black hole. Select the answer that correctly explains this. a. This black hole’s mass is 3 million times greater than our sun. So it is no danger to us. b. The affect of gravity decreases over distance, and this black hole is very far away. c. Unlike other celestial objects, black holes do not have any gravity.

2. Mass is a measure of the amount of matter in an object. Weight is the measure of gravitational force exerted on an object. Which property of an object will be different on the moon than it is on Earth? a. mass c. Weight b. chemical structure d. pH level

3. An astronaut is in orbit about planet Jupiter which has more mass than any other planet in our solar system. In Jupiter’s orbit he weighs 912 N (Newtons). Then he travels back home to planet Earth.

4. On Earth an astronaut has a mass of 70 kg (kilograms), and her weight is 700 N (Newtons). She travels to Mars which is smaller and less massive than Earth. What would her weight be on Mars? a. Greater than 700 N. c. Greater than 70 kg. b. Less than 700 N. d. Less than 70 kg.

5. Electromagnets are frequently used in many modern devices, and students can a build a simple electromagnet with common items sold in most hardware stores. The construction of an electromagnet would be best completed by introducing a current into loops of wire wrapped around...? popsicle stick a plastic rod an iron nail. a glass square

A student builds the electromagnet shown in the diagram below A student builds the electromagnet shown in the diagram below . How can the student increase the strength of the magnetic field around the electromagnet? a. Use a wire with a smaller diameter. b. Remove the nail from within the coil. c. Move the battery closer to the nail. d. Increase the number of loops in the coil.

7. Closely examine the two examples shown above. Which of these electromagnets would be able to lift more paper clips and why? a. Example W would lift more, because it has three batteries. b. Example X would lift more, because it has less coils around the iron core. c. Example X would lift more, because it has more coils around the iron core. d. Example W would lift more, because it has less coils around the iron core.

Move Around the Room Review TOC: #. Move Around the Room Review Number your paper to 8; skipping every other line. You will have 2 minutes or less at each lab table to answer the question an JUSTIFY!

Gravity of the Situation video