Physical Science Crovato
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| The "Law of Inertia" is also known as ____________ | Newton's 1st Law
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| What is a compound machine? | a machine made up of 2 or more simple machines that operate together
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| What is power? | rate of doing work
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| How many paths through which charge can flow would be shown in a circuit diagram of a series circuit? | 1
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| A wet cell battery produces electrons from the chemical reaction between what 2 substances? | sulfuric acid and lead
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| What is measured at a particular time? | instantaneous speed
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| What are 2 examples of 2nd class levers? | wheelbarrow and nutcracker
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| What does "milli" mean? | 0.001
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| How many watts are in 1 HP? | 746
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| What kind of friction occurs as a fish swims through water? | fluid
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| According to Newton's second law of motion, the acceleration of an object equals the net force acting on the object divided by the object's______ | mass
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| What type of current is produced by a battery? | direct current
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| What law of motion describes action and reaction forces? | Newton's 3rd law
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| An open parachute increases air resistance of a falling sky diver by __________ surface area | increasing
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| What is work? | transfer of energy
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| What is a drawback of solar energy? | it depends on climate
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| What is an example describes constant acceleration due ONLY to a change in direction? | traveling around a circular track
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| What type of graph is used to show how a part of something relates to the whole? | circle graph
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| How are science and technology related? | advances in science may lead to advances in technology and vice versa
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| What is a true statement about scientific theories? | they may or may not ever be proven
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| What are 2 ways a machine can make work easier for you? | by changing the direction of your force and by multiplying your force
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| What is a scientific law? | a rule or principle that describes what happens in nature
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| What causes projectile motion? | the downward force of gravity and an initial forward velocity
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| Reducing friction in a machine _______ its efficiency therefore producing more work output | increases
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| What does "kilo" mean? | 1000
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| Charges flow easily through what type of material? | metal
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| How do wheels reduce the amount of friction? | they reduce surface area between surfaces in contact
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| An electroscope is designed to detect an ______________ | electric charge
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| What is the first step of the scientific method? | state your problem
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| What type of energy is stored in gasoline? | chemical eneregy
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| What is a system of knowledge and the methods used to find that knowledge? | science
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| What would reduce the resistance of a metal wire? | increasing it's thickness
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| What's the acceleration due to gravity of earth? | 9.8 m/s/s
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| What would have high inertia? | a jet plane sitting still on the runway
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| What the SI unit for temperature used in scientific measurement? | kelvin
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| What are 3 factors that affect the amount of sliding friction between 2 objects? | 1)weight of objects 2) type of surface 3) amount of lubrication on surfaces
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| What is resistance measured in? | ohm
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| What's the SI unit of force? | newton
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| If an object gains elections, it becomes __________ | negatively charged
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| What devices are used to keep electrical circuits from overheating? | circuit breakers and fuse
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| What is kinetic energy? | energy of motion
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| Why is the gravitational potential energy of an object 1 meter above the moon's surface less than its potential energy 1 meter above Earth's surface? | The object's acceleration due to gravity is less on the moon.
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| As you push a cereal box across a tabletop, the sliding friction acting on the cereal box __________________________________ | in the direction opposite of motion
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| In the equation for acceleration, how can you describe acceleration if the numerator is negative? | Slowing down or deceleration
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| As an astronaut travels far away from Earth, her weight decreases because ____ decreases | gravity
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| Why might an orange roll off your cafeteria tray when you stop suddenly? | because of the oranges inertia
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| What is an ax an example of ? | wedge
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| Most circuits in your home are ______________ | parallel circuits
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| Walking converts what type of energy into mechanical energy? | chemical
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| A benefit of a hydrogen fuel cell is that its byproduct is __________ | water
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| A machine is a device that can multiple ______ | force
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| What the SI unit of power? | watt
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| How can you tell if an object is accelerating? | it speeds up, slows down or changes direction
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| A horizontal line on a distance-time graph means the object is _______ | at rest
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Created by:
dcrovato
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