Science Overview Flashcards
(139 cards)
1
Q
What is the scientific method?
A
A systematic process for experimentation that is used to explore observations and answer questions.
2
Q
True or False: Plants need sunlight to grow.
A
True
3
Q
Fill in the blank: The three states of matter are _____, liquid, and gas.
A
solid
4
Q
What is photosynthesis?
A
The process by which green plants use sunlight to synthesize foods with the help of chlorophyll.
5
Q
What is the primary function of the roots of a plant?
A
To anchor the plant and absorb water and nutrients from the soil.
6
Q
Multiple Choice: Which of the following is NOT a planet in our solar system? A) Earth B) Sun C) Mars D) Jupiter
A
B) Sun
7
Q
What do we call the force that pulls objects toward the Earth?
A
Gravity
8
Q
True or False: All animals are classified as either vertebrates or invertebrates.
A
True
9
Q
Fill in the blank: The _____ is the basic unit of life.
A
cell
10
Q
What is the water cycle?
A
The continuous process by which water moves from the Earth’s surface to the atmosphere and back.
11
Q
Multiple Choice: Which layer of the Earth is liquid? A) Crust B) Mantle C) Outer Core D) Inner Core
A
C) Outer Core
12
Q
What is an ecosystem?
A
A community of living organisms interacting with their physical environment.
13
Q
True or False: The Earth revolves around the Moon.
A
False
14
Q
Fill in the blank: A _____ is a scientist who studies rocks and minerals.
A
geologist
15
Q
What is the function of the leaves on a plant?
A
To perform photosynthesis and exchange gases.
16
Q
Multiple Choice: Which of the following is a renewable resource? A) Coal B) Oil C) Solar Energy D) Natural Gas
A
C) Solar Energy
17
Q
What is the process of changing from a liquid to a gas called?
A
Evaporation
18
Q
True or False: All living things reproduce.
A
True
19
Q
Fill in the blank: An animal that eats only plants is called a _____ .
A
herbivore
20
Q
What is the main purpose of the scientific experiment?
A
To test a hypothesis.
21
Q
Multiple Choice: Which organ is responsible for pumping blood in the human body? A) Brain B) Liver C) Heart D) Lungs
A
C) Heart
22
Q
What is a food chain?
A
A series of organisms each dependent on the next as a source of food.
23
Q
True or False: The sun is a star.
A
True
24
Q
Fill in the blank: _____ is the force that opposes motion between two surfaces in contact.
A
Friction
25
What is the difference between a habitat and a niche?
A habitat is the environment where an organism lives, while a niche is the role or function of that organism within its habitat.
26
Multiple Choice: What type of energy is stored in food? A) Thermal B) Chemical C) Mechanical D) Electrical
B) Chemical
27
What is the main gas that plants absorb during photosynthesis?
Carbon dioxide
28
True or False: The Earth's atmosphere is made up mostly of oxygen.
False
29
Fill in the blank: A _____ is an animal that can live both in water and on land.
amphibian
30
What is the primary source of energy for the Earth?
The Sun
31
Multiple Choice: Which of the following is a non-renewable resource? A) Wind B) Solar C) Oil D) Biomass
C) Oil
32
What is a physical change?
A change that affects one or more physical properties of a substance but does not change its chemical composition.
33
True or False: All mammals have feathers.
False
34
Fill in the blank: The _____ is the part of the plant that produces flowers and fruits.
stem
35
What is the role of decomposers in an ecosystem?
To break down dead organisms and recycle nutrients back into the soil.
36
Multiple Choice: Which planet is known as the 'Red Planet'? A) Venus B) Mars C) Jupiter D) Saturn
B) Mars
37
What is the difference between a solid and a liquid?
A solid has a definite shape and volume, while a liquid has a definite volume but takes the shape of its container.
38
True or False: Insects are the only animals that can fly.
False
39
Fill in the blank: The process of water changing from gas to liquid is called _____ .
condensation
40
What is the main purpose of the circulatory system?
To transport blood, nutrients, gases, and waste products throughout the body.
41
Multiple Choice: Which of the following is a characteristic of living things? A) Growth B) Inertia C) Invisibility D) Silence
A) Growth
42
What is the primary function of the skeletal system?
To provide structure and support to the body.
43
True or False: All plants are autotrophs.
True
44
Fill in the blank: The layer of gases surrounding the Earth is called the _____ .
atmosphere
45
What is the difference between renewable and non-renewable resources?
Renewable resources can be replenished naturally, while non-renewable resources cannot be replaced once used.
46
Multiple Choice: What is the smallest unit of life? A) Organ B) Tissue C) Cell D) Organism
C) Cell
47
What is the term for a group of cells that work together to perform a specific function?
Tissue
48
True or False: The Earth has only one moon.
True
49
Fill in the blank: The _____ is the part of the flower that attracts pollinators.
petal
50
What is an adaptation?
A characteristic that helps an organism survive in its environment.
51
Multiple Choice: Which of the following is a gas at room temperature? A) Ice B) Water C) Oxygen D) Salt
C) Oxygen
52
What is the role of the nervous system?
To transmit signals between different parts of the body and coordinate responses.
53
True or False: All fish live in freshwater.
False
54
Fill in the blank: The _____ is the outer layer of the Earth.
crust
55
What is the term for the movement of tectonic plates?
Plate tectonics
56
Multiple Choice: Which of the following organs is part of the digestive system? A) Heart B) Lungs C) Stomach D) Brain
C) Stomach
57
What is the difference between a herbivore and a carnivore?
A herbivore eats only plants, while a carnivore eats only animals.
58
True or False: The process of evaporation cools the surrounding environment.
True
59
Fill in the blank: An organism's _____ is its role in the environment, including its habitat and interactions.
niche
60
What is the main purpose of the respiratory system?
To exchange gases (oxygen and carbon dioxide) between the body and the environment.
61
Multiple Choice: What is the primary component of the Earth's atmosphere? A) Nitrogen B) Oxygen C) Carbon Dioxide D) Argon
A) Nitrogen
62
What is a food web?
A complex network of feeding relationships among various organisms in an ecosystem.
63
True or False: All mammals lay eggs.
False
64
Fill in the blank: The _____ is the part of the plant that absorbs water and nutrients from the soil.
root
65
What is the term for the variety of life in an ecosystem?
Biodiversity
66
Multiple Choice: Which of the following is an example of a habitat? A) Ocean B) Car C) Cloud D) Building
A) Ocean
67
What is the primary function of the immune system?
To protect the body from infections and diseases.
68
True or False: Plants are considered producers in an ecosystem.
True
69
Fill in the blank: The _____ is the process by which organisms produce offspring.
reproduction
70
What is the term for an animal that hunts and eats other animals?
Predator
71
Multiple Choice: Which of the following is a characteristic of reptiles? A) Warm-blooded B) Lays eggs C) Has feathers D) Lives in water
B) Lays eggs
72
What is the primary role of a scientist?
To investigate and understand the natural world through observation and experimentation.
73
True or False: The Earth is flat.
False
74
Fill in the blank: The _____ is the layer of the Earth where earthquakes occur.
mantle
75
What is a biome?
A large ecological area on Earth’s surface with distinct flora and fauna.
76
77
What is the chemical formula for water?
H2O
78
True or False: The Earth revolves around the Sun in a circular orbit.
False
79
Fill in the blank: The process by which plants make their own food is called ______.
photosynthesis
80
What is the primary unit of mass in the metric system?
kilogram
81
Which gas do plants absorb from the atmosphere during photosynthesis?
carbon dioxide
82
Multiple choice: What is the powerhouse of the cell? A) Nucleus B) Mitochondria C) Ribosome D) Cell membrane
B) Mitochondria
83
What is the main function of the circulatory system?
To transport blood, nutrients, gases, and waste throughout the body.
84
True or False: DNA stands for Deoxyribonucleic Acid.
True
85
Fill in the blank: The basic unit of life is called a ______.
cell
86
What is the law of conservation of mass?
Mass is neither created nor destroyed in a chemical reaction.
87
Multiple choice: Which of the following is a renewable resource? A) Coal B) Natural Gas C) Solar Energy D) Oil
C) Solar Energy
88
What is the pH range of acidic solutions?
0 to 7
89
True or False: All matter is made up of atoms.
True
90
Fill in the blank: The force that pulls objects toward each other is called ______.
gravity
91
What is the primary function of the respiratory system?
To facilitate gas exchange, primarily oxygen and carbon dioxide.
92
What subatomic particle determines the identity of an element?
Protons
93
If an atom has 6 protons, 6 neutrons, and 6 electrons, what is its atomic number and mass number?
carbon-12 (¹²C)
94
Which part of the periodic table contains the most reactive metals?
Group 1
95
How are elements arranged in the periodic table?
Atomic number
96
Why does a metal spoon feel colder than a wooden spoon at room temperature?
Metal attracts temperature
97
You place your hand near a campfire and feel warmth without touching it. Which type of heat transfer is this?
Radiation
98
Hot air balloons rise because warm air is less dense and rises. What kind of heat transfer causes this movement?
Convection
99
A pan is heated on a stove and becomes hot. What type of heat transfer is occurring between the burner and the pan?
Conduction
100
A rock weighs 500 g and takes up 100 cm³ of space. What is its density? Will it float in water?
5 and yes
101
Sugar dissolves faster in hot water than in cold. Which property is this an example of?
Solubility
102
You test two substances for flammability. One burns quickly, and the other does not catch fire. What conclusion can you make about their properties?
One is flammable and one is not flammable
103
What are two signs that a property is a chemical property rather than a physical one?
Physical is only the apperance changed
Chemical is like rust
104
You are measuring how far a ball rolls. Which unit should you use: centimeters or inches?
Inches
105
What metric unit would you use to measure the amount of liquid in a soda can?
mL
106
Why do scientists prefer using metric units in experiments?
Closer to the exact measurements, making it easier to calculate
107
Convert 1.5 meters to centimeters
150 centimeters
108
If noodles are circling in a pot of boiling water, what type of heat transfer is happening?
Covection
109
If you burn your finger after touching a lava lamp, what type of heat transfer occurred?
Conduction
110
If your feet become hot while walking on a beach, what type of heat transfer is this?
Conduction
111
The sun melts ice cream on a hot sunny day. What type of heat transfer is this?
Radiation
112
If you cook an egg on a skillet, what type of heat transfer is that?
Conduction
113
What are the 2 main types of changes that categorize the world around us?
Physical and Chemical Change
114
Name 3 ways of heat transfer
Radiation, conduction, and convection
115
Explain what a hypothesis is
An estimate or guess on information you already have
116
What happens to your body in sub-zero temperatures?
The organs begin to shut down
117
What is an atom with more neutrons than protons?
Isotope
118
What is the difference between Convection and conduction?
Convection deals with air currents, and conduction is direct contact
119
Is water freezing a physical or chemical change?
Physical, because it can be reversed
120
CO2, what are its parts
Carbon, Oxygen, Oxygen
121
Explain why a drink mix is a chemical change
It can't be reversed
122
What is flammability?
The ability to catch on fire
123
What are some icons of a chemical change?
Bubbles, color change, odor, solids, and crystallization
124
What are some things you can recognize in a physical change?
Cut, tear, crumble
125
How do you find density?
Mass/volume
126
What is the energy of motion?
Kinetic
127
The transfer of energy through particles that are in direct contact
Conduction
128
The transfer of energy through circulating fluids
Convection
129
Energy is transferred between two objects of different temperatures
Heat
130
The energy the object has because of its position
potential
131
The transfer of energy through waves or rays
Radiation
132
The average kinetic energy of all the particles in a material
temperature
133
Required for changes to happen within a system
Energy
134
The kinetic energy of tiny vibrating particles that make up matter
Thermal
135
Chemical changes ____ cause color change
can
136
Chemical changes are ___ easily reversible
not
137
Ice cream melts in your hand. Is that Radiation or conduction?
Conduction
138
What are the physical properties of matter?
Characteristics that you can measure without changing the identity of matter.
139
If an irregular-shaped object is placed in a graduated cylinder that has 20 mL of water and the water is displaced to 22 mL, what is the volume of the object
2 mL
