Physics 1
What is the use of resistor wires?
Creates light and heat energy to resist the flow of electrons
What are valence electrons?
the number of electrons in the last shell
How do plants attract insects?
Colour, smell, nectar
What is a process of asexual reproduction?
Binary fission, budding, fragmentation, propagation
What is the difference between AC and DC?
AC is alternating current, allows for different pathways to move back and forth
DC is direct current and allows for only one movement forward
Why are parallel circuits better than series circuits
If there is a break, parallel allow for continued flow but series does not
What atoms or particles are found in the nucleus of an atom?
Protons and Neutrons
What part of the flower produces pollen?
Anther
What is the approximate length of a menstrual cycle?
21-35 days
Give an example of a insulator and conductor
Insulator = glass, plastic, wood
Conductor = iron, metal, gold, copper
What is the density formula?
Density = mass/volume
Neutral litmus paper turns what colour when placed in a acidic solution
Red
What is a method of seed dispersal?
Wind, water, explosion
What is a chemical change in males during puberty?
Voice drops, high testosterone level increase
What is the pressure formula?
Pressure = force/area
Why are wires wrapped in rubber?
Rubber is a insulator and prevents electricity moving through
Universal indicator is placed in a solution that turns green, what is the pH
Neutral (6-8)
What is the process of photosynthesis?
What is the role of the placenta during the gestational period?
Protect the fetus, safe environment, stable temperature, provide nutrients
What happens to a magnet if both the north poles are facing each other?
Repel against each other
Use the magnetic pull to determine direction by the attraction to the earth - the earth can switch magnetic directions
What is this chemical reaction
Fe + H₂SO4 = FeSO+ H₂
Single displacement (single replacement)
What is the process of fertilization in a plant?
Pollen is placed at the top of the stigma and moves through the pollen tube in the style, it then is in the ovary and finally goes to the ovule for a fruit/seed to be produced
Feedback response