Biology
Define osmosis.
The movement of water from an area of high water concentration to an area of low water concentration across a partially permeable membrane.
What charge does a Nitrogen ion form if it is in group 5?
3-
Which energy stores are missing from this list?
Electrostatic, gravitational potential, thermal, kinetic, elastic potential, nuclear
Chemical and magnetic
What is the smallest unit of life?
Cell
What noise does Prince make every time he enters the classroom?
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
Name the blood vessel that carries blood from the lungs to the heart.
Pulmonary vein
Who discovered the neutrons? (First and Last name)
What distance does a football travel if it is kicked with a force of 0.2 kN and the work done is 500 J? (give units)
2.5m
What is the force that pulls objects toward the center of the Earth?
Gravity
Who has the highest attendance in our class? (2 students)
Miriam and Rehuel
What is the site of protein synthesis in a cell?
Ribosomes
What are the forces between ions called in ionic bonding and between molecules in covalent bonding?
Electrostatic forces of attraction and intermolecular forces.
What type of energy store does a bungee cord have when a bungee jumper jumps off a cliff?
Elastic potential energy.
What gas do plants absorb from the atmosphere during photosynthesis?
Carbon dioxide
What does Mr. Johns do every Friday P5 during the lesson?
Sleep
What is the real size of a leaf cell in micrometres if the image size is 30mm with a magnification of x250.
120 micrometres.
Why is diamond the hardest structure on Earth?
Each carbon atom is covalently bonded to 4 others.
What is the new mass number and atomic number of an unstable nucleus of Plutonium (239 and 94) undergoing radioactive ALPHA decay?
235 and 92
Name all the differences between plant and animal cells.
Chloroplasts, cell wall, vacuole
Who always taps, talks, makes noises, rocks his chair, gets up, moves, sings, mumbles, plays the drums... is generally the most annoying student in the whole universe?
Rehuel
Why does the spongy mesophyll layer in a leaf cell have air gaps in it?
To increase surface area for gas exchange.
What is the relative atomic mass of Fe if it consists of the following isotopes and their abundancies:
Fe-55.93 with an abundance of 91.75%
Fe-57.93 with an abundance of 0.27%
Fe-56.94 with an abundance of 2.13%
Fe-53.94 with an abundance of 5.85%
55.84
How is a BETA particle formed?
A neutron will break down into a proton and an electron.
What causes the seasons on Earth?
The tilt on Earth's axis as it orbits the Sun
Who is your favourite teacher?
Mr Bouros