Chapter 9-11-14

Question 1

The Earth’s ____ Keeps the gases from escaping into space.

Answer 1

Gravity

Question 1

The Molecules of the gases in the atmosphere are energized by_____ and kept in continual motion.

Answer 1

Sunlight

Question 2

The density of air ____ with altitude

Answer 2

Decreases

Question 3

The atmospheric pressure is caused by

Answer 3

The weight of air

Question 4

Barometer is an instrument used for measuring the

Answer 4

Pressure of the atmosphere

Question 5

The barometer “balances” when the weight of liquid in the tube exerts _____ pressure as the atmosphere outside

Answer 5

The Same

Question 6

An Altimeter is calibrated to read

Answer 6

Altitude

Question 6

If a balloon continuously flies up into the atmosphere, what will happen to its volume

Answer 6

Increases

Question 7

Which law states that the product of the pressure and volume for a given mass of gas is constant as long as the temperature does not change

Answer 7

Boyle’s Law

Question 8

An Object surrounded by fluid is buoyed up by force equal to the weight of the fluid displaced. What principle is this

Answer 8

Archimedes principle

Question 9

Bernoulli’s principle states that when the speed of a fluid increases the pressure

Answer 9

Drops

Question 9

What causes a birds wings to lift when they are fully extended?

Answer 9

The low pressure from the top and the high pressure from the bottom of the wings

Question 10

A lunar eclipse happens when

Answer 10

The Earth is between the moon and the sun

Question 10

Ocean tides are caused by

Answer 10

Differences in forces between opposite parts of the Earth and the moon

Question 11

Suppose the gravitational force between two masses is 10 N. If the distance between the masses is cut into thirds what would the force be between them

Answer 11

90 N

Question 12

Solar eclipse happens when

Answer 12

The moon is between the Earth and Sun

Question 13

Suppose the gravitational force between two masses is 5 N If the distance between the masses is doubled what would the force be between them

Answer 13

20N

Question 14

The moon will not fall into the Earth, it actually falls ____ The Earth

Answer 14

Around

Question 15

If the elevator cable broke and the elevator was free falling, your weight would

Answer 15

Be Zero

Question 16

The moon will not fall into the Earth because of its

Answer 16

Tangential Velocity

Question 17

If the elevator was accelerating down, you weight would

Answer 17

decrease

Question 18

What is the constant used to make the gravitational force equal instead of proportional

Answer 18

Universal Gravitational Constant

Question 19

When there is a new moon and the moon is in between the Earth and Sun, the tides are higher or lower than on average. These are called ____ tides

Answer 19

Spring

Question 20

When there is a half-moon, the tides are lower than average high tides or higher than average low tides. These are called ____ tides

Answer 20

Neap

Question 21

After the collapse of high mass star, the density becomes infinite and light cannot even escape a _____ pull

Answer 21

Blackhole's

Question 22

If an object moves farther from Earth's surface, the gravity will become _____

Answer 22

Less

Question 23

Atoms are ______

Answer 23

Smaller than the wavelengths of visible light

Question 24

Atoms of the same kind make up ___ and there are more than 115

Answer 24

An element

Question 25

The lightest element, which makes up 90% of all atoms in the universe is

Answer 25

Hydrogen

Question 26

Elements heavier than hydrogen have been formed

Answer 26

Deep within stars

Question 27

Almost all of the mass of an atom is found in the

Answer 27

nucleus

Question 28

This classifies the element, and is the same as the number of protons in the nucleus

Answer 28

Atomic number

Question 29

Atoms that combine to form larger particles are called

Answer 29

Molecules

Question 30

Predominant phase of matter in the universe is

Answer 30

Plasma

Question 31

In what phase of matter is where the atoms and molecules vibrate about fixed positions

Answer 31

Solid

Question 32

If the weight at the end of a spring is quadrupled then the distance is

Answer 32

Also quadrupled

Question 33

Which has a higher density a pure silver ring or a pure silver bar

Answer 33

they would be the same

Question 34

Which has a higher density, a loaf of bread just out of the oven or a loaf that has been squeezed into a smaller volume

Answer 34

The squeezed loaf

Question 35

Steel is a strong metal that is very

Answer 35

elastic

Question 36

What is the density of a toy that has a mass of 150g and a volume of 50 cubic cm

Answer 36

P = m/v p = 3 g/cubic cm

Question 37

When the number of electrons is more or less than the number of protons in an atom, the atom becomes charged and is called an

Answer 37

ion