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Worksheets7th grade Midterm
Total questions: 60
Worksheet time: 30mins
Which of the following is NOT part of the scientific method?
State the problem
Form a Hypothesis
Mix Recipe
Analyze Results
Test Hypothesis
What is a prediction that has not yet been tested?
Hypothesis
Dependent Variable
Control Group
Scientific Method
The variable in an experiment that is being changed.
Independent Variable
Dependent Variable
Scientific Method
Control Group
The dependent variable in an experiment means......
the scientist controls what to test.
ask a question.
take an educated guess.
what is being measured.
A series of steps used by scientist to solve a problem or answer a question.
Independent Variable
Scientific Method
Dependent Variable
Hypothesis
Which is the correct order of the scientific method?
State the problem, Form a Hypothesis, Analyze Results, Research, Draw Conclusions
Form a Hypothesis, State the Problem, Research, Draw Conclusions, Analyze Results
Research, Form a Hypothesis, State the Problem, Analyze Results, Draw Conclusions
State the problem, Research, Form a Hypothesis, Analyze Results, Draw Conclusions
In an experiment, what is a sample that is treated like the other except the independent variable is NOT added to it?
Dependent Variable
Control
Scientific Method
Constant
A reliable experiment can have two or three independent variables.
True
False
Scientist must follow the scientific method for valid results.
True
False
What is matter with a composition that is always the same?
substance
element
compound
mixture
Which of the following contains only one type of atom?
compound
mixture
element
Homogeneous mixture
What is a compound?
Matter with a composition that is always the same.
Matter that contains 2 or more types of atoms.
Anything that has mass and takes up space.
Matter that contains 1 type of atom.
A homogeneous mixture is.....
not evenly mixed.
anything that has mass and takes up space.
evenly mixed.
the largest substance present in a solution.
What is matter?
A substance that has composition and always stays the same.
The largest substance present in a solution.
Anything that contains 2 or more atoms.
Anything that has mass and takes up space.
What is the largest substance present in a solution called?
solute
solvent
matter
sunstance
Atoms with a positive charge are called....
neutrons.
electrons.
protons.
neutral.
What are electrons?
Atoms with a negative charge.
Atoms with a neutral charge
Atoms with a positive charge
Atoms with no charge.
Where are protons and neutrons located?
In the electron cloud.
On the periodic table.
Not in an atom.
In the nucleus.
Which is correct for the image shown?
1. Electron
2. Neutron
3. Proton
4. Nucleus
1. Electron
2. Proton
3. Nucleus
4. Neutron
1. Proton
2. Nucleus
3. Proton
4. Neutron
1. Nucleus
2. Neutron
3. Proton
4. Electron
Using the image, how many neutrons are in Carbon?
12
6
0
18
What two things does metal conduct well?
water and wood
electricity and water
thermal energy and wood
electricity and thermal energy
What type of metals are the most reactive?
alkaline earth metals
nonmetals
alkali metals
metaloids
What are the three states of matter?
metals, nonmetals, metaloids
elements, liquids, gas
gas, liquids, solids
solids, metals, gas
Which best describes the particles in a solid?
They float freely.
They are packed so tight they can only vibrate.
They move extremely fast around each other.
They do not move at all.
In which state of matter do the particles float freely around each other?
Liquid
Solid
Gas
None of them.
Which state of matter has a definite mass, shape, and volume?
Solids
Liquid
Gas
None
Which state of matter has a definite mass and volume but forms to the shape of its container?
None
Liquids
Solids
Gas
Which of the following has no definite mass, shape, or volume?
Solids
None
Gas
Liquids
When temperature increases, particles have more energy and move faster.
True
False
Which of the following defines a chemical reaction?
Change in appearance
Same chemical properties
Physical change in size or shape that can be reversed.
Can not be reversed, changes to a new substance, forms something new.
Which is an example of a physical reaction?
Bathbomb in water
Mixing paint
Fireworks Popping
Burning wood
What is the transfer of thermal energy between materials by the collision of particles?
Conduction
Convection
Radiation
Kinetic energy
What is the transfer of thermal energy from one material to another by electromagnetic waves?
Conduction
Convection
Radiation
Potential energy
What is the transfer of thermal energy by the movement of particles from one part from one part of the material to the other?
radiation
convection
conduction
genotype
Which of the following defines Genotype?
Heterozygous
Homozygous
The physical characteristics being used.
The alleles (letters) being used.
When using a punnet square, what are the PHYSICAL CHARACTERISTIC (TRAITS) being tested known as?
Genotype
Phenotype
Homozygous
Heterozygous
Homozygous = Different
Heterozygous = Same
True
False
Define the genotype GG
Homozygous dominant
Heterozygous dominant
Homozygous recessive
Heterozygous recessive
Define the genotype: Tt
Homozygous dominant
Heterozygous recessive
Homozygous recessive
Heterozygous
Define the genotype: rr
Homozygous dominant
Heterozygous dominant
Homozygous recessive
Heterozygous recessive
Characteristics learned or obtained from the environment are defined as....
Inherited traits
Homozygous traits
Dominant traits
Acquired traits
Characteristics controlled by a gene, passed from their parent, are defined as....
Inherited traits
Acquired traits
Recessive trait
Heterozygous trait
Variations that help an organism survive its environment to live longer and reproduce more are ___________.
Selective breeding
Genetic Engineering
Natural selection
Adaptation
What is it called when two parents with certain traits are selected to hopefully have offspring with those desired traits?
Selective breeding
Natural selection
Genetic engineering
Mutation
What is it called when scientists alter or modify DNA to enhance an organism?
Natural selection
Selective breeding
Genetic engineering
Adaptation
What are sudden changes in base pairs of a DNA sequence defined as?
Adaptation
Mutation
Selective breeding
Genetic engineering
What is an inherited trait that helps a species survive?
Adaptation
Genetic engineering
Mutation
Natural selection
What is a single celled (unicellular) organism that does not have a nucleus?
Eukaryote
Golgi body
Prokaryote
Ribosome
What are multicellular, complex cells that contain a nucleus?
Prokaryote
Eukaryote
Ribosome
Nucleus
Which organelle produces ribosomes?
Nucleus
Mitochondria
Nucleolus
Cytoplasm
Which organelle produces lysosomes, packages proteins and releases them into the cytoplasm?
Golgi Body
Ribosome
Cell membrane
Chloroplast
Which organelle builds and produces proteins, and maintains or replaces the tissues in your body?
Chloroplast
Vacuole
Cell membrane
Ribosome
What is the jelly fluid inside the cell in which organelles are suspended?
Golgi Body
Cytoplasm
Lysosome
Mitochondria
Which organelle breaks down food molecules and dead or injured cells?
Vacuole
Lysosome
Cytoplasm
Chloroplast
Which organelle stores water and other materials?
Lysosome
Chloroplast
Vacuole
Cell membrane
Which organelle provides energy for cellular respiration (Powerhouse of the cell)?
Cytoplasm
Mitochondria
Cell Wall
Ribosome
Which of the following is the correct answer to number 4 on the image shown?
Cytoplast
Mitochondria
Endoplasmic Reticulum
Vacuole
What is the correct answer for number 3 in the image shown?
Mitochondria
Ribsome
Golgi Body
Lysosome
What is the atomic mass of Magnesium?
24
12
25
36
Which of the following lists the states of matter shown in order from left to right?
Gas
Solid
Liquid
Liquid
Gas
Solid
Solid
Gas
Liquid
Solid
Liquid
Gas
