Calss Test , Skills, Enegy, Work

Question 1

Length has the unit…

Answer 1

Meter(m)

Question 2

Time has the unit…

Answer 2

Seconds(s)

Question 3

Electric current has the unit…

Answer 3

Ampere(A)

Question 4

Tempature has the unit…

Answer 4

Kelvin(K) but in highschool we use (C)

Question 5

Light intensity has the unit…

Answer 5

Candela(cd)

Question 6

Amount of matter in a substance has the unit…

Answer 6

Mole(mol)

Question 7

Mass has the unit…

Answer 7

Kilogram(kg)- teenager of the SI units

Question 8

Energy

Answer 8

The ability to do work

Question 9

Forms of energy

Answer 9

Chemical potential energy
Gravitational potential energy
Elastic potential energy

Question 10

Potential energy

Answer 10

Energy that can be stored in readiness to be used

Question 11

Kinetic energy

Answer 11

Energy of a moving object or body

Question 12

What is a energy transfer diagram called

Answer 12

Sankey diagram

Question 13

Energy forms that move from place to place

Answer 13

Heat
Light
Sound

Question 14

Princible of conservation of energy

Answer 14

Energy that can not be destoryed and can only change into anouther form

Question 15

Energy is measured in…

Answer 15

Joules( J )

Question 16

what is WORK

Answer 16

When a force moves an object

Question 17

What is weight

Answer 17

Weight is a force

Question 18

What is the formula for mechanical energy

Answer 18

Ep + Ek

Question 19

Si unit for kinetic energy

Answer 19

Joule(J)

Question 20

Gravitational potential energy

Answer 20

The energy an object possesses due to its position relative to a reference

Question 21

Def for Power

Answer 21

The word done per second
OR
The rate of work done

Question 22

Fomula for power

Answer 22

Work done(J)
——————
Time taken(s)

Question 23

What unit is power meaused in

Answer 23

Watts(W)

Question 24

What do the pwoer rateung on appliemces tell us

Answer 24

How much electrical emergy us cobverted by the appliemces unto anluth form of energy per second