Gravity
a non-contact force hat acts between two masses
gravity/gravitational force
What is the rock that is made up of small rock deposits
Sedimentary
what is the SL unit of force?
newtons
What is the chemical symbol for Hydrochloric acid
HCL
What is the genetic material called in the nucleus
the region where other objects feel a gravitational force
field
what are the three rock types?
Igneous rocks, Metamorphic rocks and Sedimentary rocks.
An action that changes or maintains the motion of a body or object.
Force
What is the trend of reaction in the Group 1 elements as you go down?
It increases
How many chromosomes are in a human body cell
46 (23 pairs)
What is the SL unit used to measure force?
newtons
A natural process that slowly breaks apart or changes rock
Weathering
what is the formula of weight?
F = m × g
What ion does Group 7 become when it has reacted
-1
What is the reason why egg and sperm cells have half the amount of the chromosomes of a body cell
Because when a egg and sperm cell fuse to create fertilised cell, it has 46 chromosomes in total
a force pulling towards the centre of a circle is called?
centripeal force
describe the formation of sedimentary rocks
Sedimentary rocks are formed from deposits of pre-existing rocks or pieces of once-living organism that accumulate on the Earth's surface. If sediment is buried deeply, it becomes compacted and cemented, forming sedimentary rock.
What are the quantities that force can change? And give an example.
Force can change the speed, shape,and direction of an object. For example when a piece of metal is beaten by a hammer its shape changes.
What is the equation for a neutralisation reaction
Acid + base --> Salt + water
What is the difference between genetic and environmental characteristics? give one example of each
Genetic characteristics are the characteristics that you inherit from your parents, for example eye colour environmental characteristics are the characteristics that is affected by the environment for example accent
what is tangential velocity?
Tangential velocity is the linear speed of any object moving along a circular path.
Igneous rocks formed by cooling of molten rock.
Sedimentary rocks formed by small rock pieces being transported in rivers and laid down in layers.
Metamorphic rocks are formed from another rock under heat and pressure
What is the net force on 200 g ball when it hits a wall with acceleration of 10 m/s2?
2 N
What is the conservation of mass
Matter cannot be created or destroyed. The mass of the reactants equals the mass of products
Explain briefly how two parents with brown eyes can have an offspring with green eyes
Both parents are carrier of the gene that codes for green eyes and past that gene onto their child
or
Genetic mutation