Gravitational Field

The definition of gravitational field strength is:

• The region of space surrounding a body where other bodies will feel an attractive force due to it.

• The region of space surrounding a body where other bodies will feel an repulsive force due to it.

• The region of space surrounding a charge where other charges will feel an attractive force due to it.

• The region of space surrounding a charge where other charges will feel an repulsive force due to it.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

The closer together the gravitational field lines.....

• the weaker the gravitational field strength

• the stronger the gravitational field strength

• the more repulsive the gravitational field strength

Gravitational field strength is measured in:

• N

• J/kg

• m/s

• N/kg

Tags

NGSS.HS-PS2-4

How far out from a mass should the gravitational field lines go....

• to where the gravitational field becomes negligable

• to twice the diameter of the mass

• infinitely far

• to four times the diameter of the mass

Tags

NGSS.HS-PS2-4

The gravitational field around an object is represented by:

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Which of the following statements about gravitational fields is true?

• Gravitational fields affect objects only when two objects are touching.

• Any object that has mass is surrounded by a gravitational field.

• Gravitational fields affecting objects only if the objects are not in contact.

• Only very massive objects, such as Earth, are surrounded by a gravitational field.

Tags

NGSS.MS-PS2-5

An object is moved from A to B in the gravitational field of Earth. The distance between the centre of Earth and B is twice that of A. If the gravitational potential energy of the object at A is –2.0 MJ, what is the gravitational potential energy of the object at B?

• zero

• -0.5MJ

• -1.0MJ

• -4.0MJ

Tags

NGSS.MS-PS3-2

Saturn has a surface field strength of 10.4 N kg⁻¹ and a radius of 6.03 × 10⁴ km. What is the mass of Saturn?

• 4.7 × 10¹⁸ kg

• 5.7 × 10²⁰ kg

• 4.7 × 10²⁴ kg

• 5.7 × 10²⁶ kg

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

If a feather and a hammer are dropped at the same time on the moon, where there is no atmosphere, which one will hit the ground first?

• Neither, there is no gravity on the moon.

• hammer because it has more mass

• feather because it has less mass

• both will hit at the same time, there is no wind resistance

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

The symbol for gravitational field strength is

• GF

• gfs

• g

• G