Magnetism and Gravitational Force

Two new planets are discovered, planet X and planet Y. The planets have identical volumes, but the mass of planet X is two times greater than the mass of planet Y. If two identical space ships land on each planet, which of the following will be true?

• The mass of the space ship on planet Y will be greater than the mass of the space ship on planet X.

• The weight of the space ship on planet Y will be greater than the weight of the space ship on planet X.

• The mass of the space ship on planet X will be greater than the mass of the space ship on planet Y.

• The weight of the space ship on planet X will be greater than the weight of the space ship on planet Y.

If Earth had twice the mass it has now, how would the gravitational force between

• The gravitational force would be twice as much as it is now.

• The gravitational force would be four times as much as it is now.

• The gravitational force would be half as much as it is now.

• The gravitational force would be the same as it is now.

• Earth, Mars, Venus

• Earth, Venus, Mars

• Venus, Mars, Earth

• Venus, Earth, Mars

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Which of the diagrams shows the greatest gravitational force?

• I

• II

• III

• IV

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Which of the diagrams shows the least gravitational force?

• I

• II

• III

• IV

Tags

NGSS.MS-PS2-4

• The diameters of the objects in Figure A are greater than the diameters of the objects in Figure B.

• The masses of the objects in Figure A are less than the mass of the objects in Figure B.

• The distance between the objects in Figure A is shorter than the distance between the objects in Figure B.

• The surface area of the larger object in Figure A is greater than the surface area of the larger object in Figure B.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Ivan has a magnet and four different objects. He places the magnet near each of the objects and records whether each object attracts, repels, or has no reaction. Which question is Ivan's experiment designed to answer?

• Which type of magnet will apply force on an object?

• How can magnetic force affect an object's shape?

• Which objects will respond to a magnetic force?

• How does an object's gravity affect a magnet?

Which of the following graphs best represents the gravitational force between two point masses as a function of the distance between the masses?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-4

Which of the following events is caused by magnetic force?

• A person gets a shock from a doorknob after walking across carpet.

• Pieces of clothing stick together after being in a clothes dryer.

• The needle of a compass points toward Earth's North Pole.

• Objects are constantly pulled toward the center of Earth.

A group of students plans to make a small compass using a blunt sewing needle. What is the next step they should perform with the needle?

• press it between two hard surfaces

• heat it on a candle flame

• rub it on a bar magnet

• scratch it on a steel spoon