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Years 7-9 Science Week 2020 Flashcards | StudBud
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Years 7-9 Science Week 2020
Years 7-9 Science Week 2020
45 terms
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Quiz for lower high school students for Science Week
Flashcards
45 cards
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Practice quiz
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Host live
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Questions
45
Answers
1
An object will only move when the forces are balanced!
False
True
2
Which is not a type of Colloid?
Foam
Jelly
Lemonade
Blood
3
Which is NOT a useful form of friction?
Light from a Globe
Brakes in a car
Sandpaper
Heat from a Globe
4
What drives Continental Drift?
Friction
Heat
The atmosphere
Convection currents
5
Which of the following is NOT evidence that a chemical change has taken place?
A new odour
Bubbles
Heat production
The solute dissolves in the solvent
6
The variable that stays the same in an experiment is the
Control variable
Independent Variable
Dependent Variable
Controlled Variable
7
Symbiosis involves the interaction of 2 organisms. Which represents commensalism?
+ 0
+ -
+ +
- -
8
Which of these substances is a mixture?
24 Carat Gold
Water
Carbon Dioxide
Air
9
Which part of the Microscope allows you to increase the magnification?
Objective lens
Eye piece lens
Condenser
Stage
10
Which is NOT a characteristic of Mammals?
Ectothermic
4 chambered heart
Have mammary glands
Covered in fur or hair
11
Hawaii
is caused by a weak spot in the Earth's crust
is at a diverging plate boundary
is part of the Ring of Fire
is in the middle of a tectonic plate
12
Which is true when considering EM waves?
EM waves all have the same frequency
EM waves are mechanical
EM waves are longitudinal
EM waves are transverse
13
In the Water Cycle, the movement of water down though the soil is called
Infiltration
Evaporation
Precipitation
Run off
14
The units for Force is
Meters per second
Newton
Joules
Kilograms
15
Which is true of a hypothesis?
It must have 2 controlled variables
It must be true
It must have the dependent and independent variables
It must be general to include all circumstances
16
Liquid rock above the ground is called Magma.
False
True
17
V=IR. If the current is 6A and the voltage is 12V, what is the resistance of the circuit?
2Ω
72Ω
18Ω
2R
18
A rock that has been exposed to lots of heat and pressure is called
an Igneous Rock
a Sedimentary Rock
a Hot, Squashed Rock
a Metamorphic Rock
19
The Himalayas are caused by the Indo-Australian plate crashing into the
Nazca plate
Chinese plate
North American plate
Eurasian plate
20
Which Period is Beryllium in?
4
1
2
3
21
When energy from the sun hits Nitrogen in the atmosphere it causes which colour to appear?
Blue
Green
Red
Yellow
22
Which type of succession is caused by a lava flow?
Third
Second
First
Fourth
23
Mountain ranges are only found at subduction zones
False
True
24
Which is NOT a form of Potential Energy?
Rotational
Elastic
Gravitational
Electrical
25
The chemical formula for Calcium Nitrate is
CN
Ca(NO2)2
Ca(NO3)2
CaNi
26
Gravity on Earth is
9.4 ms-2
9.6 ms-2
9.2 ms-2
9.8 ms-2
27
Current is measured with an ammeter.
True
False
28
Which state of matter has the greatest density?
Liquid
Gas
Solid
Plasma
29
In classification, which of the following has organisms that are most alike?
Order
Class
Family
Kingdom
30
Which organelle does a plant cell have that an animal cell does not?
Ribosome
Large Vacuole
Golgi Apparatus
Mitochondrion
31
What is the resistance of X in this circuit?
3Ω
1Ω
6Ω
15Ω
32
Friction is a contact force
True
False
33
In a Food Chain...
the heterotrophs are also known as decomposers
there can be a maximum of 6 trophic levels
the Apex Predator must be an Autotroph
the arrow points to the organism that is eaten
34
In static electricity, which part of the atom is able to move and build up on an object?
Protons
Quarks
Neurtrons
Electrons
35
In osmosis, water will always flows towards
Any solution
A hypotonic solution
A hypertonic solution
An isotonic solution
36
The uppermost layer of the atmosphere is the
Exoshere
Stratosphere
Thermosphere
Ectosphere
37
In a Lunar Eclipse
the Moon moves between the Sun and the Earth
the Earh moves between the Sun and the Moon
the Sun, Moon & Earth are equally spaced apart
the Sun moves between the Moon and the Earth
38
Which is true when considering the difference between series and parallel circuits?
Current is shared by globes in series but is the same in globes in parallel
Power is shared by globes in series but is the same in globes in parallel
Voltage is shared by globes in series but is the same in globes in parallel
Charge is shared by globes in series but is the same in globes in parallel
39
Which is true of energy in an ecosystem?
Energy leaves an ecosystem through photosynthesis
Energy enters ecosystems through cellular respiration
Energy can be recycled
Energy exists the ecosystem as heat
40
Which is NOT a form of Asexual reproduction?
Budding
Spores
Flowers
Fragmentation
41
The function of Mitosis is for Growth, Repair & Movement.
True
False
42
Hot substances have a lot of
Bonding
Gravitational Potential Energy
Kinetic Energy
Atoms
43
In an atom...
Electrons are found in the nucleus
Protons are found in the nucleus
Protons have a negative charge
Neutrons have a positive charge
44
Conventional current moves from
the battery to the globes
the battery to the circuit
the negative electrode to the positive electrode
the positive electrode to the negative electrode
45
Changing state from Gas to Solid is called
Sublimation
Evaporation
Melting
Condensation
