Yr 8 Chemistry
Elements are substances that contain one type of...
Atom
What is the role of the nucleus in a cell
Controls activities
What unit are forces measured in?
Newtons
Give two units that time can be measured in.
Seconds, minutes, hours, days, years
(any accepted units for time)
In science what is respiration?
Breathing
What is a compound?
A substance that contains two or more different types of atoms joined (or similar answer)
Name three parts of a plant cell
Any 3 from nucleus, cytoplasm, chloroplast, vacoule, cell wall and cell membrane
Name the three types of contact forces.
Push, pull and twist
What instrument would you use to measure temperature?
Thermometer
Name two parts of the blood.
Any two from red blood cells, white blood cells, plasma or platelets.
Name 5 elements from the Periodic Table
5 elements named
What name is given to the process where plants make food from using sunlight?
Photosynthesis
What is the difference between a balanced and unbalanced force?
Balance forces are the same in both direction. Unbalanced forces are greater in one direction (or similar description)
What is a controlled variable?
A variable that must be kept the same to ensure a fair experiment.
What name is given to the centre of an atom?
Nucleus
Give 5 element symbols from the Periodic Table
Five symbols drawn/written
What is the role xylem?
Transports water and nutrients from the roots to the leaves (or similar answer)
Name three non-contact forces
Magnetic, electric and gravitional
What is a hypothesis?
The stated expected result from an experiment
Name the food made by plants in photosynthesis.
Glucose
Name the three particles found within an atom
Protons, neutrons and electrons
Name all 7 life processes (MRS GREN)
Movement, respiration, sensitivity, growth, reproduction, excretion and nutrition
What would the weight be of a 50kg object experiencing 10m/s/s of gravity.
W=mg; = 50 x 10 = 500N
Answer = 500N
What is meant by a dependent variable?
The dependent variable is what is measured in an investigation. The result of an experiment (or similar description)
What is required to make an electromagnet?
Electricity and coils of wire.