Biology
Physics
Chemistry
Earth and Space
2025 Knowledge
100

What is the hierarchy of the components of an organism from simple to complex

cell -> tissues -> organs -> organ systems

100

Define energy

The ability to do work

100

What are two pieces of evidence a physical change has occured

1.Change in shape or form

2.Expansion and contraction

3.Change of state

4.Mixing or dissolving

5.A non-permanent colour change

100

List the four layers of the earth

inner core, outer core, mantle, crust

100

Which band’s concert kiss-cam exposed an affair between a CEO and the company’s chief people officer?

Coldplay

200

What are two components of a cell that are present in plant cells but NOT animal cells

large vacuole

cell wall

chloroplasts

200

What are the three factors that the amount of thermal energy an object has depends on

Temperature

Mass

Material

200

What is the process called when a solid changes into a gas

sublimation

200

What can hydrochloric acid be used to test for.

Bubbling = Carbonates/sedimentary rock

200

In April, an all-female crew, flew in Jeff Bezos’ rocket for an 11 minute flight, name a member of this crew

  • Katy Perry
  • Gayle King: Journalist and TV personality.
  • Lauren Sánchez: Pilot, former journalist, and fiancée of Jeff Bezos.
  • Amanda Nguyen: Civil rights activist and scientist.
  • Aisha Bowe: Former NASA engineer and entrepreneur.
  • Kerianne Flynn: Film producer.
300

What are 2 traits of an alveoli that make it suitable for gas exchange

1.A very large surface area

2.A moist surface

3.A thin surface

4.Lots of capillaries nearby

300

Name three types of potential energy

-Gravitational potential energy

-Electrical energy

-Chemical potential energy

-Elastic potential energy

Nuclear energy

300

Name this type of reaction: two clear solutions are mixed and they form a solid

precipitation

300

Marble is a metamorphic rock. What was it's original rock before it was subjected to heat and pressure

limestone or dolomite

300

What did we do in the very first lesson of Science this year?

First day of school was Wednesday, session 1 - Whole school assembly, year 8 assembly, hand out timetables
400

Explain the difference between organs and organelles

organelles - membrane bound structures found inside cells

organs - groups of tissues performing the same function

400

Provide one example of an energy transfer and one example of an energy transformation

Various examples

400

Write the following as a formula equation

Word Equation: Iron + Sulfur -> Iron Sulfide

Formula Equation: Fe + S -> FeS

400

Name two examples of each type of rock

(igneous, metamorphic, sedimentary)

answers will vary

igneous - basalt, obsidian, pumice, granite

sedimentary - limestone, sandstone, mudstone

metamorphic - schist, gneiss, slate, marble

400

What is the name of the viral collectible toys that come in boxes that everyone wanted to get their hands on this year?

Labubus

500
Name one of the two types of cell division and what type of cell it occurs in

Mitosis - eukaryotes

Binary fission - prokaryotes

500

A lightbulb is provided with 3600J of energy. It produces 900J of light energy and 2700J of heat energy. What is the energy efficiency of this lightbulb?

900/3600 (x100) = 25%

500

Sodium has an atomic number of 11 and a mass number of 23. List the amount of protons, electrons, and neutrons a sodium atom has.

protons - 11

electrons -11

neutrons - 12

500

List 4 of the 7 tests that can be used to classify rocks

crystal size and shape

hardness

behaviour in light

behaviour in acid

behaviour when struck

behaviour with magnets

streak test

500

Released in July, what album has spent the most weeks at number 1 on the ARIA (australian) charts in 2025 (as of December 11).

K-POP Demon Hunters (9 weeks)

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