Year 7 cycle 1 Science KA

Place the levels of organisation in order from smallest to largest.

• Organ system

• Organism

• Cell

• Tissue

• Organ

Idenitfy which of the following is NOT an energy store.

• Kinetic

• Elastic potential

• Sound

• Chemical

• Gravitational potential

When an object is raised or lowered in a graviational field, it loses of gains _____ ______ energy

The law of the Conservation of Energy states that...

• Once transferred, energy cannot be used again

• Energy can only be destroyed, not created

• Energy cannot be created or destroyed, only transferred between stores

• 100 % of energy supplied to a machine is wasted

A light bulb is supplied with 200 J of electrical energy. 125 J are transferred as light and 75 J are transferred as heat. Calculate the efficiency of the light bulb.

Use the equation

efficiency = Useful energy output ÷ total energy input

Mathematical Equivalence

ON

The energy store in a moving object is known as _______ energy.

Materials that allow energy to pass through them quickly are known as (a)  

• Conductors
• Insulators
• Diffusers
• Dissipators

Place the following energy resources into the correct category

Groups:

(a) Renewable resource

,

(b) Non-renewable resource

• Wind

• Wave

• Solar

• Geothermal

• Biomass

• Nuclear

• Hydroelectric

• Tidal

• Coal

• Natural gas

• Oil

Idenitfy which type of energy is stored in a stretched spring?

• Elastic potential energy

• Thermal energy
• Kinetic energy
• Chemical energy

Describe what happens to energy when it "dissipates".

• It becomes more concentrated
• It disappears completely
• It turns into matter
• It is spread out into the surroundings.