Physics Flashcards
1
Q
Frequency of Hertz is measured in…
A
Number of vibrations per second
2
Q
What do the ossicles do?
A
They transmit and amplify vibrations
3
Q
What are the signs that a chemical reaction has happened
A
Fizzing and flames
4
Q
What does a catalyst do
A
It helps speed up the rate of the reaction
5
Q
What is the equation for burning
A
Fuel + oxygen -> carbon dioxide + water
6
Q
What is an exothermic reaction
A
It is a reaction that shows and increase of temperature
7
Q
What is an endothermic reaction
A
It is a reaction that shows a decrease of temperature
8
Q
On which day is an egg released into the oviduct
A
Day 14
9
Q
What is a fertilised egg called
A
A zygote
10
Q
Which part of a plant produces pollen
A
Anthers
11
Q
On a plant, where is the pollen deposited to fertilise the flower
A
Stigma
