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WorksheetsFirst Semester Review
Total questions: 59
Worksheet time: 34mins
What is the blue circle beside the arrow pointing to in this picture?
estuary
river
ocean
wetland
Which of these shows how frozen water changes as the temperature of the air increases?
Solid → liquid → gas
Gas → liquid → solid
Solid → gas → liquid
Liquid → gas → solid
Practical jokes and horseplay in the lab are:
allowed
not dangerous at all
against the rules
a great way to entertain other lab groups
Which statements about the periodic table are correct?
(pick 2 answers)
All elements in the periodic table have different names and symbols.
It is a chart that lists all elements known to man.
All substances present on Earth are listed in the periodic table.
There are more than 1,000 elements listed in the periodic table.
Scientists test their hypothesis in which step of the scientific method?
Stating the problem
Performing the experiment
Recording and analyzing data
Gathering information
Which changes are CORRECTLY classified either as physical or chemical changes?
(pick 3 answers)
The burning of wood, producing carbon dioxide, is a chemical change.
Paper being ripped into many small pieces is a physical change.
Salt dissolving in a glass of water is a physical change.
The freezing of water, producing ice, is a chemical change.
Shiny metals becoming dull when exposed to air is a physical change.
Based on the information given, which of the following are true statements?
The atomic number of Tin is 118.710.
The atomic mass of Krypton is 83.8.
The atomic symbol of Tin is Sn.
The atomic number of Krypton is 36.
The atomic mass of Copper is 29.
A teacher gave her students this safety contract. Which rule did she accidentally put in the wrong place?
Rule #4
Rule #5
Rule #9
Rule #12
Scientists use models to help explain the structure of the atom. Label the parts of the model below.
What orbits the nucleus of an atom?
neutrons
electrons
protons
nucleus
What does the nucleus of an atom contain?
protons and electrons
electrons and neutrons
protons and neutrons
protons only
Which can be determined from the atomic number?
the number of neutrons
the number of quarks
the number electrons + neutrons
the number of protons
Fluorine has an atomic number of 9 and an atomic mass of 18. How many protons does an atom of fluorine have?
18
9
10
19
A student has an assignment to construct a model of the element sodium, Na. How many protons should he display on his model?
10 protons
12 protons
11 protons
23 protons
A teacher represents the atomic mass and atomic number of an element, as shown. She asks her students to select an element that has as many protons as the number of neutrons in Al. Which element should the students select?
A change in matter that produces a new substance is —
physical change
chemical change
Which of the following are examples of physical changes?
(pick 3 answers)
bursting of a balloon
exploding fireworks
carbon and oxygen react to form a new gas called Carbon Dioxide
liquid water evaporating into a gas
butter melting in a pan
Which statement was NOT included in cell theory?
All living things are composed of cells.
Living cells come only from other living cells.
Each cell contains a cell membrane, cytoplasm, nucleus, mitochondria, and endoplasmic reticulum.
Cells are the smallest structure of living things that can perform the functions necessary for life.
Who discovered and named cells while looking at cork?
Captain Hook
Robert Hooke
Matthais Schleiden
Rudolf Virchow
Cell make up all ______ things
Living
Dead
There is no word in between
Plants
Membrane bound organelles
Eukaryote
Prokayrote
Unicellular means
single-celled
unicycle
multi-celled
Does this cell have a nucleus?
yes
no
What would happen to the planets in the solar system if the Sun's gravitation force disappeared?
They would stay still
They would fly away in straight lines
They would explode
They would stop rotating
If two organisms belong to the same order, then they must also belong to the same...
Species
Class
Family
Genus
Largest and most general group into which organisms are classified is called...
Species
Class
Domain
Family
The more classification levels that two organisms share,
the closer together on earth they live.
the easier it is to tell them apart.
the more related they become because of many shared characteristics.
the more distance is between them due to lack of shared characteristics.
What is this graph representing?
Ocean
Atmosphere
Crust
Living Things
Look at the data table. Which graph below best represents the most abundant elements in the Earth's crust?
The Earth's crust is made up of mainly what two elements?
Oxygen and Nitrogen
Oxygen and Silicon
Oxygen and Carbon
Oxygen and Hydrogen
Which element, which is essential for human life, is found in large amounts in both Earth's atmosphere and oceans?
helium
silicon
oxygen
calcium
Which four elements make up most living things?
oxygen, carbon, hydrogen, nitrogen
silicon, calcium, oxygen, aluminum
chlorine, sodium, hydrogen, oxygen
sulfur, phosphorous, calcium, nitrogen
The basic unit of matter is an
asteriod
alloy
atom
adverb
Which state of matter has atoms or molecules spread the farthest apart?
solid
liquid
gas
grass
What causes different seasons on Earth?
Distance from the sun
Axial tilt
Atmospheric pressure
Revolution speed
How does Earth's axial tilt affect the seasons?
It changes the angle of sunlight
It changes the speed of rotation
It changes the atmospheric composition
It changes the distance from the sun
What is the angle of Earth's axial tilt?
45 degrees
15 degrees
23.5 degrees
30 degrees
What happens during the winter solstice in the Northern Hemisphere?
It experiences the longest day of the year.
It experiences the shortest day of the year.
It has exactly 12 hours of daylight and 12 hours of darkness.
It is the start of the tropical storm season.
Which one is NOT a producer?
Tree
Shrub
Grass
Cricket
How many PRIMARY consumers are there?
1
2
3
4
Which one of the following is a SECONDARY consumer?
Cricket
Frog
Deer
Mouse
