GPE, Kinetic Energy, Thermodynamics

What two factors affect GRAVITATIONAL POTENTIAL energy?

• mass

• height

• speed

• mass and speed

• mass and height

Tags

NGSS.MS-PS3-2

The kinetic energy of an object increases as its ______ increases.

• gravitational energy

• potential energy

• specific heat

• velocity

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

The SI unit for energy is the _____.

• calorie

• joule

• meter per second

• kilogram

You can calculate kinetic energy by using the equation _____.

• KE (J) = m (kg) x 9.8 m/s² x h (m)

• KE (J) = w (m) x h (m)

• KE (J) = 1/2 m (kg) x v² (m/s²)

• KE (J) = 9.8 m/s² x 1/2 m (kg)

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

According to the law of conservation of energy, the total amount of energy in the universe ____.

• remains constant

• changes constantly

• increases

• decrease

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Heat always flows from the object with the _________ temperature, to the ______________ temperature.

• lower, higher

• higher, lower

• higher, higher

• lower, lower

Tags

NGSS.MS-PS1-4

The rate at which work is done is ___________.

• Power

• Force

• Efficiency

• momentum

The amount of heat needed to raise the temperature of 1 kg of a material by 1 degree Celcius is ...

• GPE

• Mechanical energy

• Work

• Specific Heat

Your 20 gallon fish tank has a mass of 80 kg when full. If it sits on a 1.5 m stand, what is its gravitational potential energy?

• 1176 J

• 90 J

• 81.5 J

• 784 J

• 120 J

Answer explanation

Don't forget to account for acceleration from gravity (9.8 m/s²)

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

Your mass is 72 kg. You climb to the top of a 3 m ladder. What is your gravitational potential energy?

• 324 J

• 2116.8 J

• 216 J

• 705.6 J

• 24 J

Answer explanation

Don't forget to account for acceleration from gravity (9.8 m/s²)

Tags

NGSS.MS-PS2-4