# Final

## 112 terms

meter.

kilometers.

### An object is moving at a speed of 4m/s. What does this mean?

it takes the object 1 second to make it 4 meters.

average speed.

### A car's speedometer measures

instantaneous speed.

yes.

true.

direction.

### Acceleration is what?

a change in speed.

sliding.

decreases.

true.

less.

### What is the purpose of opening a parachute while skydiving?

increase air resistance forces to slow you down.

### Why would a skydiver reach terminal speed quicker lower in the atmosphere?

there is more air lower in the atmosphere and therefore more air resistance.

triangle.

friction.

### Friction

force that opposes the motion of touching objects.

### Gravity

force between 2 objects that have mass.

### Support

also known as normal force, it is in an upward direction.

squeezing force.

pulling force.

sliding force.

twisting force.

### Two main categoriest of friction:

kinetic and static.

steel.

weight.

inercia.

newtons.

it increases.

### Imagine this scenario: a train is traveling at a high speed between a power plant and a coal mine. It arrives at the coal mine and loads up coal in almost every car. On the return trip to the power plant, what happens?

the mass of the train is more, so more force is required to get it to accelerate.

it decreases.

### What is work?

applying a force, gettnig an object to move in the direction you applied the force.

no.

no.

more.

screw.

wheel and axle.

inclined plane.

wedge.

lever.

pulley.

power.

lever.

wedge.

inclined plane.

lever.

pulley.

inclined plane.

lever.

wheel and axle.

### Wheelbarrow(2)

wheel and axle or inclined plane AND a lever.

lever.

wheel and axle.

wheel and axle.

compound.

less, longer.

fixed.

compound.

moveable.

joules.

kinetic.

true.

true.

false.

true.

fission.

fussion.

uranium.

### What is absolute zero?

a point at which all atoms of a substance quit moving and zero degrees Kelvin.

potential.

ability.

calorie.

### What type of energy does a rubber band have when streched out?

elastic potential.

### What type of energy does a body of whater have at the top of a waterfall or dam?

gravitaional potential.

tenoerature.

higher.

geothermal.

### The energy of motion that can be seen on a larger scale.

mechanical energy.

chemical energy.

heat energy.

### The stored energy that atoms have due to their height.

gravitational potential energy.

### The energy of moving electrons.

electrical energy.

### The energer that objects have due to being stretched or compressed.

elastic potential energy.

nuclear energy.

Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune

dwarf.

Jupiter.

hydrogen.

light.

Geocentric.

Aristotle's.

### Which of these is NOT an object in our solar system? (moons of planets, stars other than the sun, planets, the sun)

stars other than the sun.

false.

### We think our moon is filled with _______ because ______ that would burn up in earth's atmosphere don't burn up in the small amount of atmosphere the moon has.

craters, meteorites.

it's smaller.

tides, seasons.

comet.

meteoriod.

Kuiper Belt.

false.

false.

gas giants.

### The inner planets are often called ________. (rocky, gas, terrestrials)

rocky, terrestrials.

nebula.

helium.

small-medium.

main sequence.

black dwarf.

asteriod.