SYSAK I1 Materials A&I (GCHSS)

Which of the following is the unit of measurement for pressure?

• Newtons (N)

• Joules (J)

• Pascals (Pa)

• Metres (m)

If two variables are directly proportional, what is the relationship between them?

What is the formula for gravitational potential energy?

The gradient of a graph is

• Change in y-axis divided by change in x-axis

• Total area under the graph

• Change in y-axis divided by y-intercept

• Change in x-axis divided by change in y-axis

Choose ALL the correct statements

• Work done = Force x displacement

• Work done = Energy transferred

• Work done = mass x velocity

• Work done = Energy lost

Choose ALL the forces

• Friction
• Energy
• Weight

• Tension

To find the area of a triangle, use the formula:

• Area = base × height

• Area = base + height
• Area = ⅓ × base × height

• Area = ½ × base × height

Mark all correct statements about energy,

• Energy can be transferred

• Energy is conserved

• Energy can change form

• Energy can be created and destroyed

Answer explanation

Energy can be transferred, conserved, and change form, reflecting the principles of thermodynamics. However, energy cannot be created or destroyed, as stated in the law of conservation of energy.

In Hooke's law, the two quantities which are directly proportional are

• Force and extension

• Energy and time
• Pressure and volume
• Mass and velocity

Draw a graph showing direct proportion