Solutions for University Physics for the Life
Sciences, Updated.
What orbits the sun every 365.25 days? - answers The Earth
How long does the moon take to orbit the Earth? - answers 28 days
How long does it take for the Earth to rotate on its axis? - answers 24 hours
Why do we have seasons? - answers The Earth's tilt
What angle is the Earth tilted at? - answers 23 degrees
Name a natural satellite that orbits the earth - answers The Moon
Name a man-made satellite that orbits the earth - answers International space station
The standard unit for weight is... - answers N
The standard unit for mass is... - answers Kg
weight = - answers mass x strength of gravity
The gravitational field strength of a planet depends on its... - answers mass
Name the planets in order (starting closest to the sun) - answers Mercury (my)
Venus (very)
Earth (easy)
Mars (method)
Jupiter (just)
Saturn (speeds)
Uranus (up)
Neptune (naming)
Forces are measured in... - answers Newtons
A boat floats because the force of weight is balanced by the force of - answers
buoyancy
A car slows down because the brakes provide - answers friction
A parachute increases surface area, increasing the effect of - answers air resistance
,If an object has balanced forces acting upon it, it will remain at a... - answers constant
speed
If an object has unbalanced forces acting upon it, it will... - answers accelerate
Planes use more fuel when they have more passengers to provide
more_____________ to counter act the increased weight - answers Thrust
A horizontal line on a distance time graph shows that an object is... - answers Stationary
Air resistance increases with... - answers speed
Aerodynamic objects will create less - answers drag
Density = - answers mass/volume
An object floats because it is __________ dense than water - answers less
The common measurement for temperature is... - answers degrees Celsius
Heat energy is measured in... - answers Joules
Conduction occurs in which state of matter? - answers solids
Convection occurs in which 2 states of matter? - answers Liquids and Gases
What are the 3 states of matter - answers Solid, liquid and gas
If something isn't a conductor, it is an.... - answers insulator
In convection, hot air rises because it becomes.... - answers less dense
All objects emit thermal radiation in the form of ___________ waves - answers infrared
What colour emits and absorbs the most radiation - answers black
What colour emits and absorbs the least radiation - answers White
A solid changing to a liquid is known as - answers melting
A liquid changing to a gas is know as - answers evaporation
A gas changing to a liquid is known as - answers condensation
A liquid changing to a solid is known as – answers
kinematics - answers concepts that are needed to describe motion
, dynamics - answers the effect that forces have on motion
vector - answers magnitude + direction
scalar - answers magnitude
average speed - answers distance/elapsed time
average velocity - answers displacement/elapsed time
instantaneous velocity - answers how fast the car moves and the direction at each
instant
acceleration - answers the rate at which speed is changing
Newtons first law - answers object at rest will stay at rest object in motion will stay in
motion unless acted upon by an unbalanced force
free body diagram - answers a diagram that represents the object and the forces that
act on it
net force - answers total force, resultant force
gravitational force - answers W=mg
newtons third law - answers for every action there is an equal and opposite reaction
(same magnitude but opposite directions)
newtons second law - answers F=ma
Ball hits a window - answers Window breaks but the force of the ball on the glass is not
greater than the force of the glass on the ball because as Newton's 3rd Law states: for
every actino there is an equal and opposite reaction; magnitudes are equal.
A tractor hauling a log - answers there is force opposite of motino, as the tractor tire
puches the Earth, the Earth pushes back and frictional force is in the direction of motion.
A boxcar on a frictionless track is hauling corn until it comes to a deposit area and
empties it all out - answers here Conservation of Momentum occurs as the corn takes
the momentum of the boxcar. Momentum is given to the Eartha nd transferred, the
Earth now has momentum from corn while the boxcar carries momentum to the Earth.
A car and airplane with the same mass race - answers the car accelerates faster at the
beginning because momentum is conserved from the car, now forward momentum and
Sciences, Updated.
What orbits the sun every 365.25 days? - answers The Earth
How long does the moon take to orbit the Earth? - answers 28 days
How long does it take for the Earth to rotate on its axis? - answers 24 hours
Why do we have seasons? - answers The Earth's tilt
What angle is the Earth tilted at? - answers 23 degrees
Name a natural satellite that orbits the earth - answers The Moon
Name a man-made satellite that orbits the earth - answers International space station
The standard unit for weight is... - answers N
The standard unit for mass is... - answers Kg
weight = - answers mass x strength of gravity
The gravitational field strength of a planet depends on its... - answers mass
Name the planets in order (starting closest to the sun) - answers Mercury (my)
Venus (very)
Earth (easy)
Mars (method)
Jupiter (just)
Saturn (speeds)
Uranus (up)
Neptune (naming)
Forces are measured in... - answers Newtons
A boat floats because the force of weight is balanced by the force of - answers
buoyancy
A car slows down because the brakes provide - answers friction
A parachute increases surface area, increasing the effect of - answers air resistance
,If an object has balanced forces acting upon it, it will remain at a... - answers constant
speed
If an object has unbalanced forces acting upon it, it will... - answers accelerate
Planes use more fuel when they have more passengers to provide
more_____________ to counter act the increased weight - answers Thrust
A horizontal line on a distance time graph shows that an object is... - answers Stationary
Air resistance increases with... - answers speed
Aerodynamic objects will create less - answers drag
Density = - answers mass/volume
An object floats because it is __________ dense than water - answers less
The common measurement for temperature is... - answers degrees Celsius
Heat energy is measured in... - answers Joules
Conduction occurs in which state of matter? - answers solids
Convection occurs in which 2 states of matter? - answers Liquids and Gases
What are the 3 states of matter - answers Solid, liquid and gas
If something isn't a conductor, it is an.... - answers insulator
In convection, hot air rises because it becomes.... - answers less dense
All objects emit thermal radiation in the form of ___________ waves - answers infrared
What colour emits and absorbs the most radiation - answers black
What colour emits and absorbs the least radiation - answers White
A solid changing to a liquid is known as - answers melting
A liquid changing to a gas is know as - answers evaporation
A gas changing to a liquid is known as - answers condensation
A liquid changing to a solid is known as – answers
kinematics - answers concepts that are needed to describe motion
, dynamics - answers the effect that forces have on motion
vector - answers magnitude + direction
scalar - answers magnitude
average speed - answers distance/elapsed time
average velocity - answers displacement/elapsed time
instantaneous velocity - answers how fast the car moves and the direction at each
instant
acceleration - answers the rate at which speed is changing
Newtons first law - answers object at rest will stay at rest object in motion will stay in
motion unless acted upon by an unbalanced force
free body diagram - answers a diagram that represents the object and the forces that
act on it
net force - answers total force, resultant force
gravitational force - answers W=mg
newtons third law - answers for every action there is an equal and opposite reaction
(same magnitude but opposite directions)
newtons second law - answers F=ma
Ball hits a window - answers Window breaks but the force of the ball on the glass is not
greater than the force of the glass on the ball because as Newton's 3rd Law states: for
every actino there is an equal and opposite reaction; magnitudes are equal.
A tractor hauling a log - answers there is force opposite of motino, as the tractor tire
puches the Earth, the Earth pushes back and frictional force is in the direction of motion.
A boxcar on a frictionless track is hauling corn until it comes to a deposit area and
empties it all out - answers here Conservation of Momentum occurs as the corn takes
the momentum of the boxcar. Momentum is given to the Eartha nd transferred, the
Earth now has momentum from corn while the boxcar carries momentum to the Earth.
A car and airplane with the same mass race - answers the car accelerates faster at the
beginning because momentum is conserved from the car, now forward momentum and
