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WorksheetsScience Challenge
Total questions: 40
Worksheet time: 26mins
Which of the following is an example of a chemical reaction?
Mixing salt and sugar together
Boiling water
Cutting a piece of paper
The reaction between hydrogen gas and oxygen gas to form water
According to Newton's first law of motion, an object at rest tends to stay at rest unless acted upon by what?
gravity
internal force
friction
external force
What is the SI unit of electric current?
A
D
C
B
Which organ is responsible for pumping blood throughout the body?
kidney
heart
stomach
liver
What is the main cause of global warming?
Deforestation
Increase in greenhouse gases
Volcanic eruptions
Solar flares
In a chemical reaction, what are the substances to the left of the arrow called?
Catalysts
Intermediates
Reactants
Products
What is the formula for Newton's second law of motion?
F = at
F = pa
F = ma
F = mv
What is the unit of resistance in an electrical circuit?
Ohm
Joule
Volt
Ampere
Which part of the human brain is responsible for controlling voluntary movements?
Occipital lobe
Motor cortex
Cerebellum
Frontal lobe
What is the process by which plants make their food called?
Respiration
Transpiration
Photosynthesis
Chlorophyll
What is the law of conservation of energy?
Energy can be destroyed completely
Energy cannot be created or destroyed, only transferred or transformed.
Energy can be transformed into matter
Energy can be created out of nothing
What is the SI unit of force?
Newton (N)
Joule (J)
Meter (m)
Kilogram (kg)
Which component of blood is responsible for carrying oxygen to the body's cells?
Red blood cells
Hemoglobin
Plasma
Platelets
What is the main source of energy for most living organisms?
Rocks
Sun
Moon
Wind
What is the role of the ozone layer in the atmosphere?
Generating oxygen for plants
Regulating the Earth's temperature
Blocking harmful visible light
Absorbing harmful ultraviolet radiation
What is Newton's first law of motion?
Every action has an equal opposite reaction
An object in motion stays in motion unless acted upon by an unbalanced force
The force acting on an object is equal to the mass of an object times its acceleration
Sandwich
The 5 characteristics of minerals include; they are solids, non-living, __________, __________, and _____________.
man made, contain 3 elements, sometimes liquids
naturally occurring, have a chemical formula, a crystal shape
multicellular, heterozygous, are crystals
unicellular, organic, found in nature
What is geothermal energy?
Energy from water.
Energy from wind.
Energy from the sun.
Energy from within the earth.
Which organelle in plant cells is responsible for photosynthesis?
Nucleus
Chloroplasts
Endoplasmic reticulum
Mitochondria
Multicellular organisms belong in which kingdom?
Archaebacteria
Fungi
Protist
Eubacteria
The genotype for a yellow plant is...
The information you collect while doing your experiment is called
conclusions
data
hypotheses
procedures
Another term for a controlled variable is a:
independent variable
responding variable
observation
constant variable
m/s2 is a unit of
speed
velocity
acceleration
time
Which is a nonrenewable source of energy?
solar
wind
coal
geothermal
Which statement best describes this energy source?
What instrument is used to measure the diameter of an object in millimeters?
Ruler
Micrometer
Caliper
Scale
Which test is used to detect the presence of starch in a food sample?
Sudan III test
Benedict's test
Biuret test
Iodine test
Which technique is used to separate components of a mixture based on their different boiling points?
Filtration
Crystallization
Distillation
Evaporation
What property of a material determines how easily it allows the flow of electric current?
magnetism
conductivity
resistivity
permittivity
What is the main source of carbon in the carbon cycle?
Marine animals
Underground carbon deposits
Volcanic eruptions
Atmospheric carbon dioxide (CO2)
