Energy

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Kinetic and Potential Energy

Subtopic

Kinetic and Potential Energy under Energy for Grade 9 IB.

About Topic & Revision

Preview questions (no answers)

1.
$Energy cannot be created or destroyed, only transformed. This is known as the Law of:$
A. $Gravity$
B. $Motion$
C. $Conservation of Energy$
D. $Thermodynamics$
2.
$1\ kg$
A. $1\ J$
B. $2\ J$
C. $4\ J$
D. $0.5\ J$
3.
$Which of these is NOT a form of potential energy?$
A. $Gravitational$
B. $Elastic$
C. $Chemical$
D. $Sound$

Download the worksheet for Energy - Kinetic and Potential Energy to practice offline. It includes additional chapter-level practice questions.

Conservation of Energy

Subtopic

Conservation of Energy under Energy for Grade 9 IB.

About Topic & Revision

Preview questions (no answers)

1.
$A battery charger is plugged into a wall. It feels warm to the touch after an hour. This warmth indicates:$
A. $100\%$
B. $Energy is being dissipated as heat$
C. $The battery is full$
D. $Electricity is being created$
2.
$1 \, Joule$
A. $1 \, Newton-meter$
B. $1 \, Watt/second$
C. $1 \, kg \cdot m/s$
D. $1 \, Newton/meter$
3.
$If an object is stationary on a shelf, which statement is true?$
A. $It has no energy$
B. $It has maximum kinetic energy$
C. $It has gravitational potential energy$
D. $It is creating energy$

Download the worksheet for Energy - Conservation of Energy to practice offline. It includes additional chapter-level practice questions.

Work, Power, and Efficiency

Subtopic

Work, Power, and Efficiency under Energy for Grade 9 IB.

About Topic & Revision

Preview questions (no answers)

1.
$100\%$
A. $Energy is created by the machine$
B. $Energy is lost as heat due to friction$
C. $The machine does not have enough power$
D. $Gravity stops the machine from being perfect$
2.
$W = 50\ J$
A. $100 W$
B. $25 W$
C. $52 W$
D. $48 W$
3.
$0.2$
A. $2%$
B. $20%$
C. $0.2%$
D. $200%$

Download the worksheet for Energy - Work, Power, and Efficiency to practice offline. It includes additional chapter-level practice questions.

Thermal Energy Transfer

Subtopic

Thermal Energy Transfer under Energy for Grade 9 IB.

About Topic & Revision

Preview questions (no answers)

1.
$Which property of a surface makes it a good reflector of heat?$
A. $Being dark and rough$
B. $Being light and shiny$
C. $Being black and smooth$
D. $Being transparent and thick$
2.
$A student places a hand above a hot cup of tea and feels heat. The air is moving upwards. This is primarily due to:$
A. $Conduction$
B. $Convection$
C. $Radiation$
D. $Reflection$
3.
$Which method of heat transfer does NOT involve the movement of particles?$
A. $Conduction$
B. $Convection$
C. $Radiation$
D. $Diffusion$

Download the worksheet for Energy - Thermal Energy Transfer to practice offline. It includes additional chapter-level practice questions.

Energy - IB Grade 9 Science Notes & Revision | Krit.club