7th grade science 2

Question 1

Science

Answer 1

Process of trying to understand the world

Question 2

Technology

Answer 2

Use of knowledge gained from scientific thinking and problem-solving to make new products or tools

Question 3

Constant

Answer 3

Factor that stays the same through all phases off an experiment

Question 4

Control

Answer 4

Standard used for comparison in an experiment

Question 5

Dependent variable

Answer 5

Factor that will be measured in an experiment

Question 6

Hypothesis

Answer 6

Statement that can be tested in an experiment

Question 7

Independent variable

Answer 7

Single factor in an experiment that the experimenter changes

Question 8

Inference

Answer 8

Conclusion drawn from an observation

Question 9

Observation

Answer 9

Bit of information gathered using the senses

Question 10

Scientific method

Answer 10

Step by step procedures of scientific problem-solving, which can include identifying the problem, forming and testing a hypothesis, analyzing the test results, and drawing conclusions

Question 11

Condensation

Answer 11

Process in which water vapor changes to a liquid

Question 12

Conduction

Answer 12

Transfer of energy that occurs when molecules bump into each other

Question 13

Convection

Answer 13

Transfer of heat by the flow of material

Question 14

Hydrosphere

Answer 14

All the water on Earth’s surface

Question 15

Radiation

Answer 15

Energy transfer by waves or rays

Question 16

Coriolis effect

Answer 16

Causes moving air and water to appear to turn left in the southern hemisphere and turn right in the northern hemisphere due to Earth’s rotation

Question 17

Jet streams

Answer 17

Narrow bands of strong winds that blow near

the top of the troposphere

Question 18

Land breeze

Answer 18

Movement of air from land to sea at night, when cooler air about the land moves over the water forcing the heated less dense air above the water to rise

Question 19

Sea breeze

Answer 19

Movement of air from sea to land during the day when cooler air above the water moves over the land forcing the heated, less dense air above the land to rise

Question 20

Wind

Answer 20

The movement of air from an area of high pressure to an area of lower pressure