What causes the tectonic plates to move?

Convection currents in the mantle

Which of the following statements is true for all neutral atoms

A. Number of protons= Number of electrons

An ABIOTIC factor in an environment is

A non-living factor such as Water

any organism that can damage you

Sodium atoms and sodium ions:

have the same number of protons

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Year 9 Science

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This is a revision of all the topics we have done the whole year!

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Questions 17

Answers

1
Which part of the brain is responsible for motor skills and co-ordination?
The cerebral cortex
The parietal lobe
The cerebellum
The occipital lobe
2
The Himalayan mountains were formed because of a
Convergent boundary
Divergent boundary
Hot spot
Transform boundary
3
What causes the tectonic plates to move?
Volcanoes
Convection currents in the mantle
The Coriolis effect
Ocean currents
4
A solution that is neutral is best described by
Not being charged
Adding an acid to a base
Having a pH of 7
Having one acid particle reacting with one base particle
5
A contagious disease is one that is:
Transferred by mosquitos
Caused by all bacteria
Caused by pathogens or its products
Spread from person to person.
6
A map of global earthquakes and volcanoes tells you
Where the plate boundaries are
Where the earth is the hottest
Where the edges of the continents are
Nothing, it looks random
7
In a food chain, what is the original source of energy?
Creators
Producers
Sun
First order consumer
8
What is the first barrier in the fight against invaders?
Hair
Skin
Blood
Oils on the skin
9
Which of the following statements is true for all neutral atoms
A. Number of neutrons= number of electrons and protons
A. Number of neutrons= Number of electrons
A. Number of protons= Number of neutrons
A. Number of protons= Number of electrons
10
Animals can paralyzes others by producing chemicals that block the production and action of
Hormones
Insulin
Red blood cells
Neurotransmitters
11
The place where two plates move apart is called a
Divergent boundary
Transform boundary
Convergent boundary
Hot spot
12
An ABIOTIC factor in an environment is
non-living that will negatively affect the ecosystem
A non-living factor such as Water
An organism which provides energy for an ecosystem
An organism which breaks down materials into nutrients
13
A nerve impulse is passed from one neuron to the another across a
Reflex arc
Synapse
Relay neuron
Mylein sheath
14
The nucleus of the atom contains:
only electrons
neutrons and protons
only protons
electrons and protons
15
Pathogens relate to
All bacteria
All viruses
a virus or bacteria that creates toxins
any organism that can damage you
16
Sodium atoms and sodium ions:
have the same number of protons and electrons
are identical in their chemical properties
have the same number of protons
have the same number of electrons
17
Negatively charged ions are called
elements
particles
cations
anions

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