Science

Question 1

A student in science class drops a permanent magnetic bar and it breaks into two dissimilar pieces. What would happen to the two pieces of the magnet?

Answer 1

When brought together, the north pole of one broken piece would attract the south pole of the other broken piece

Question 2

Amoebas can live in soil or water. What biological process is most helpful in explaining the metabolism of an amoeba?

Answer 2

Respiration

Question 3

Respiration is

Answer 3

The central life process during metabolism. Oxygen is taken in allowing stored chemical energy to be released. Respiration takes place within a cell

Question 4

In what part of the subcellular organelle is genetic material stored?

Answer 4

Chromosomes

Question 5

Chromosomes

Answer 5

Contain all genetic material. Inside each chromosome is stored the long DNA molecule that carries the coded message that control all inherited traits

Question 6

Within a natural community of many different plant and animals species, what is most likely to be true?

Answer 6

Each species occupies it’s own niche in the environment

Question 7

Genotype

Answer 7

Is the genetic makeup of an organism

Question 8

Continental drift

Answer 8

Is the theory that all continents were once connected into a supercontinent

Question 9

The moon is dark during

Answer 9

A new moon

Question 10

Half the moon is lit during

Answer 10

The first and third quarters

Question 11

What would be most likely effect if the sun, moon, and earth, in that order, or directly aligned?

Answer 11

Increased gravitational pull on the tides

Question 12

What would be most likely effect if the order sun, earth, and moon were directly aligned?

Answer 12

A lunar eclipse

Question 13

The color of an object depends on

Answer 13

The colors of light that it reflects

Question 14

Rust compound

Answer 14

Iron and oxygen elements. (Rust by definition is iron oxide)

Question 15

A piece of ice of unusual shape is dropped into a large glass of water and instantly floats. What is the best explanation of this occurrence?

Answer 15

The ice has a density of less than 1.0

Question 16

Process causes the contents of an aerosol can to spray out when the top button is depressed

Answer 16

The movement of molecules toward a lower pressure area

Question 17

Alcohol boils at

Answer 17

78°C / 172°F

Question 18

Water boils at

Answer 18

100°C / 212°F

Question 19

The two main types of energy are

Answer 19

Kinetic and potential

Question 20

Kinetic energy is

Answer 20

The energy of motion

Question 21

Potential energy is

Answer 21

Energy that comes from a position

A wound spring and a toy car, a book sitting on top of the desk

Question 22

A magnetic field surrounds a magnet and is strongest

Answer 22

At the poles (not weakest), but the field force can be exerted around the entire magnet

Question 23

Heat energy makes molecules move

Answer 23

Faster and expand (take up more space)

Question 24

Colder molecules move

Answer 24

More slowly and cause most objects to contract (water is an exception)

Question 25

Seatbelts in a car were invented to address which scientific concept?

Answer 25

Inertia / newton's first law of motion also known as the law of inertia states that an object at rest tends to stay at rest, and an object in motion tends to stay in motion at the same speed and in the same direction, unless acted on by an unbalanced force

Question 26

Centrifugal force is

Answer 26

Any force that causes an object to move in a circle. If you spin a bucket full of water around fast enough centrifugal force keeps the water moving in the circle and prevents it from pouring out

Question 27

Abiotic

Answer 27

Nonliving factors in the environment include such items as soil, water, gases in the atmosphere, temperature, and light

Question 28

Digestion of food into nutrients is completed in

Answer 28

The small intestine

Question 29

The breakdown of food in the digestive system takes place in the following series of organs

Answer 29

``` Mouth > esophagus > stomach > Small intestine > Large intestine > Rectum ```

Question 30

In the periodic table of elements, and elements atomic number indicates the number of

Answer 30

Protons

Question 31

Most of the elements in the periodic table are

Answer 31

Metals

Question 32

Which metals are magnetic?

Answer 32

Iron and cobalt

Question 33

Most metals are good conductors of what?

Answer 33

Heat and electricity