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WorksheetsY8 Revision
Total questions: 70
Worksheet time: 53mins
A student touches the bottom of the pool, their feet are 1.5m above their head. Is the pressure higher at their feet or hand?
Feet
Hand
Can't Tell
I dont know
If the pool full of petrol rather than water, would the pressure be higher or lower?
Density of water - 1000kg/m3
Density of Petrol - 750kg/m3
Higher
Lower
Can't Tell
I Don't Know
Atmospheric Pressure is caused by
The weight of Air particles above you
People blowing air into your face
Wind
Warm air mixing with cold air in the upper atmosphere
Why does increasing the temperature affect gas pressure?
A) It increases the amount of the particles
B) It increases the number of collisions
C) It increases the amount of force transferred in each collision
Just A
Just C
A and B
B and C
A and B and C
How does increasing the number of particles affect gas pressure?
In increases the number of collisions
It increases the force applied to the container in each collision
It increases the speed of the particles
When a substance is heated, particles will
Move further apart
Get larger
Move closer together
Be unaffected
When heated, a substance expands and its density...
Increases
Stays the same
Decreases
Fluctuates
The process when a solid turns into a liquid
Evaporation
Sublimation
Freezing
Melting
The process when a gas turns into a liquid
Condensation
Sublimation
Freezing
Evaporation
Which letter represents when the substance is a solid?
A
B
C
D
E
Which letter represents when the substance is a liquid?
A
B
C
D
E
What can you use to see all the different colors in white light?
A flashlight
A shadow
A camera
A prism
What color is an object that absorbs all the colors in the light spectrum?
A rainbow
White
Black
Invisible
A leaf is green. What does this tell you about the light that is being absorbed?
The light is a UV ray.
The light is not a part of the light spectrum.
All colors are reflected except green.
All colors are absorbed except green
The angle between the incident ray and the normal. (X on the diagram)
Angle of X-Ray
Angle of Reflection
Angle of Incidence
Angle of Normal
If the angle of incidence in the diagram is 80°, the angle of reflection will be:
10°
100°
90°
80°
Based on the image, as light passes from medium 1 to medium 2
light speeds up and bends towards the normal
light speeds up and bends away from the normal
light slows down and bends towards the normal
light slows down and bends away from the normal
atomic number
gas at room temperature, low boiling point
a subatomic particle that has a negative charge
number or protons and neutrons
the number of protons in the nucleus of an atom
period
Elements that occur in vertical columns on the periodic table.
A horizontal row of elements in the periodic table
Found in group two of the periodic table; highly reactive
A subatomic particle that has a negative charge
A subatomic particle that has a positive charge and that is found in the nucleus of an atom
Proton
elecrtron
groups
neutrons
A subatomic particle that has a negative charge
nobles gases
protons
electrons
neutrons
Number of protons and neutrons
atomic number
atomic mass
noble gases
Non-metals
Boron (B) has 5 electrons. Its electron configuration is
5
2, 2, 1
1, 2, 2
2, 3
An element with the electron configuration 2, 1 is in which group number?
1
2
3
4
The electron configuration of Nitrogen is
0, 2, 5
N, 2, 5
7
2, 5
How many protons does Magnesium have?
24
12
2
16
The electron configuration of oxygen is 2, 6. What is its atomic number?
2
6
8
4
Aluminium has 13 electrons. How many electron shells would make up the atom?
1
2
3
4
___________________ is the transfer of pollen grain from the anther to the stigma within one flower or between flowers of the same kind.
Reproduction
Pollination
Flowering
Germination
The anther produces pollen grains that contain the male sex cells.
True
False
The ovary consists of ovules that contain the female sex cells.
True
False
Which of the following flowers is pollinated by insects?
Which of the following flowers is pollinated by insects?
The purpose of seed dispersal is for the seeds to __________.
germinate at the same time
move to the same place and grow
move further away from the parent plant
compete with one another for minerals in the soil
Why it is better for seeds to be scattered far and wide?
To provide shelter to other animals.
For farmers to see which soil is good for the plants.
For plants to have a better chance of growing healthier.
9.- What is Germination?
A) the growth of roots of a young plant.
B) the growth of new leaves of a young plant
C) the overall growth of a seed into a young plant.
10.- What are the conditions that plants need to germinate?
A) water, warmth, air
B) water, sunlight, air
C) water, sunlight, carbon dioxide
The significance of the "fire triangle" lies in the fact that
If you add hydrogen, you can generate nuclear power.
It links both theology and physics.
If you take away one of the elements, you can put out a fire
None of the above
What are the pollutants known to cause acid rain?
Carbon dioxide
nitrogen oxides and sulfur dioxide
Carbon monoxide
These are two ways people can reduce air pollution.
Drive vehicles that get low gas mileage / Burn trash at home
Burn less fossil fuels / walk and ride bikes
Burn styrofoam at landfills / Use more chlorine
Global warming is due to
Nitric and sulfuric acids
Greenhouse gases
CFCs
Which one of the following is not a fossil fuel?
Wood
Coal
Petrol
Natural Gas
What do we use limewater to test for?
Carbon Dioxide
Water
Heat
Smoke
Why do we burn a fuel?
To have fun
To release energy
To lose energy
To produce carbon dioxide
What are the products of combustion?
Hydrogen + oxygen
Carbon dioxide + water
Carbon dioxide + hydrogen
Carbon + water
What does incomplete combustion produce that complete combustion doesn't?
Carbon Monoxide
Water
Heat
Carbon Dioxide
What are the types of combustion?
Complete and incomplete
Incomplete and inexact
Impossible and possible
Computer and incomplete
What organ carries food from the mouth to the stomach?
esophagus
small intestine
large intestine
liver
The highlighted organ in this picture is the _____
small intestine
large intestine
stomach
rectum
Digestion begins _____
in the mouth
in the esophagus
in the stomach
in the liver
Chewing food is an example of
chemical digestion
mechanical digestion
What is the main purpose of the large intestine?
it absorbs hormones
it absorbs nutrients
it absorbs water
it absorbs proteins
The end of the digestive system is the
rectum
anus
large intestine
pancreas
What organ stores waste before being excreted out of the body?
small intestine
large intestine
rectum
anus
What is the function of the teeth in digestion?
to dissolve food
to break down food into smaller pieces
to absorb nutrients
to absorb water
