Physical science Flashcards
Energy is measured in?
A. Joules
B. Newtons
C. Calories
D. Both A and C
D. Both a and c
Compasses work by?
Reacting to magnetic fields
Mass is A measure of
How much matter and object contains
Which of the following is not a state of matter?
A. Ether
B. Liquid.
C. Gas.
D. Solid.
A. Ether
A chemical reaction?
Rearranged an elements molecule structure
Which state of matter has a definite volume, but no definite shape?
Liquid
Which of the following is not a form of energy?
A. Thermal.
B. Sound
C. Electric.
D. Plastic.
D. Plastic
What term describes the amount of matter in an object
Mass
Which of the following is a chemical change?
A.boiling water
B. Dissolving sugar and water.
C. Rusting iron.
D. Melting ice.
Rusting iron
What light phenomenon causes rainbows
Refraction
An element elements atomic number indicates a number of?
Protons
The electromagnetic spectrum measures
Radiation
Compounds are elements that have?
A. Mixed in various ratios.
B. Combined as liquid liquids and solids.
C. Created toxic chemicals.
D. Joined together in specific ratios.
Join together in specific ratios
Which of the following is not true of gases?
A. They have no definite volume.
B. They have no definite shape.
C. Gases cannot even evenly fill in container.
D. They are also called vapors.
C. Gases cannot evenly fill the container.
The unit of frequency is.
Hertz
What is the SI unit of work?
Joules
Why do two magnets pull together when in North Pole and South Pole are close to each other?
Opposites attract
What is the primary process by which heat is transferred in solids?
Conduction
Which of the following happens when a solid gains enough heat energy?
It melts, changing from a solid to a liquid
What is thermal equilibrium?
The condition where two objects are the same temperature and no heat flows between them
What determines an element atomic number?
The number of protons
What element has an atomic number of one
Hydrogen
Which of newtons laws says that every action has an equal and opposite reaction
The third law of motion
Inertia is
An objects tenancy to resist changes in it’s movement
What determines whether matter is in a solid, liquid, or gas state in its usual condition.
Kinetic energy
What is the pH of pure water?
Seven
When water is heated from a liquid to a gas The molecules?
The molecules move more quickly and become more spread out
At what point does water stay at a consistent temperature during the heating process?
When it reaches its boiling point
The formula you need to determine force is
F with an arrow above it; equals, M and a with the arrow above
The element with the lowest atomic number is.
Hydrogen
What is the term for an element or molecule that results from a chemical reaction?
Product
An object at rest?
Will stay at rest
A substance with a pH of three is
Less acidic than a substance with a pH of one
How many atoms of hydrogen are in the chemical compound H2Pr5I10
Two
What is the term for a change from a solid state directly to a gas state?
Sublimation
What type of energy is stored in the bonds of chemical compounds?
Chemical
According to a newtons law of universal gravitation, what happens to a gravitational force between two objects if the Distance between them is halved
The force is quadrupled
How do you read H2O as a chemical formula?
Two hydrogen atoms for every oxygen atom
If the temperature in Fahrenheit is 212°, the temperature in Celsius is?
100°
- you take 212 and divided by 5/9, then subtract it by 32
Earthquakes occur along?
Faults
Climate is?
Patterns of weather over long periods of time
Which planet is known for a prominent ring system
Saturn
What is the earths primary source of energy?
The sun
A scientist who studies space and the universe is a?
Astronomer
What is the name of the galaxy that includes earth?
Milky Way
What causes the tides in earths ocean
The moon’s gravitational pull
Which planet is known as the red planet
Mars
Which is not a type of rock?
A. Igneous.
B. Metamorphic.
C. Sedimentary.
D.Rudimentary.
D. rudimentary
What element make up most of earths atmosphere
Nitrogen
Dinosaurs exist during the
Mesozoic era
The process that takes place inside, the sun’s core is?
Nuclear fusion
Which of the following is not a terrestrial planet?
A . Earth.
B. Venus.
C. Saturn.
D. Mercury
Saturn
Radiometric dating involves?
Observing the natural decay of radioactive elements in a fossil
Why are regions of earth unequal in daylight and darkness?
Because earth rotations on a tilted access
What is the term for the point on earth’s surface directly above an earthquake?
Epicenter
Approximately how thick is earths continental crust?
12 miles
What type of rocks are most likely to contain fossils?
Sedimentary
Approximately how hot is earth core?
5000 Fahrenheit to 15,000 Fahrenheit
What type of rock forms from slowly cold magma
Igneous
What percentage of earth surface is covered by the global ocean?
72%
The oceans primary role in earths climate system is too?
Drive weather and regulate temperature
The Earth atmosphere is approximately?
300 miles thick
Most weather changes occurring on earth?
Troposphere
What percentage of earths atmosphere is composed of nitrogen?
78%
The magnetosphere Is?
The outermost layer of the atmosphere
What happens when a cold front meets a warm air mass?
The warm air is pushed up, forming clouds and potential heavy rain
What is the difference between climate and weather?
Climate is an average pattern of Weather across the Earth or a specific Region, while weather refers to daily conditions
The dating technique that involves observing the natural decay of radioactive elements is?
Radiometric dating
Most weather Events take place in earth?
Troposphere
A comets tale is visible when?
The comet is close enough to the sun
Absolute zero is equivalent to?
Zero kelvins
Cool lava forms
Igneous rock
What are fast flowing, narrow air currents, located in earths atmosphere called?
Jetstream
What phenomenon occurs when earth travels between the sun and the moon
Lunar eclipse
The layer of earth directly above its outer core is The?
Asthenosphere
Which prefix is given to mid-level clouds?
alto
If you want to convert a temperature from Celsius to Fahrenheit, which Of the following steps is correct?
Multiplied by 9/5 and add 32
The first sheep, bears, apes, and modern birds appeared during the?
Neogene period of the Cenozoic era
