Term 1
What is the center of the earth called?
inner core
The basic unit of matter is called an....
the atom
What are the two main types of energy?
kinetic energy and potential energy.
What is a guard cell?
a pair of specialized cells in the epidermis of plant leaves, stems, and other organs that regulate gas exchange by controlling the opening and closing of pores called stomata.
what are the tree types of rocks?
igneous, sedimentary, metamorphic.
What are the three states of matter?
solid, liquid, gas
What is kinetic energy?
the energy of motion.
The ‘control centre’ of the cell is known as the:
1. Brain
2. Nucleus
3. Mitochondria
4. Vacuole
2. Nucleus
How is the Igenous rock formed?
molten rock, called magma or lava, cools and solidifies.
what is a chemical change?
a process where substances are transformed into new substances with different properties through a chemical reaction.
What is potential energy?
stored energy an object has due to its position, state, or arrangement.
What is the difference between an animal and plant cell?
plant cells have a rigid cell wall, chloroplasts for photosynthesis, and a large central vacuole, while animal cells lack these but contain centrioles and lysosomes.
Definition of Crystallisation.
the process of forming crystals.
What is a physical change?
a substance's form or appearance but not its chemical identity.
What is a trebuchet?
a type of powerful siege engine that uses a hinged arm and a sling to launch heavy projectiles over long distances.
Name the 7 parts of the heart
right atrium, right ventricle, Left atrium, left ventricle, aorta, pulmonary artery, pulmonary vein.
is baking bread a physical or chemical change?
chemical change
Where is potential energy stored in a stretched rubber band?
Potential energy is stored in the bonds between the atoms of a stretched rubber band.
What are the 5 levels of organisation in the body?
cells, tissues, organs, organ systems, and the organism.