Chapter 17

Question 1

Tool

Answer 1

an object used to do work

Question 2

Technology

Answer 2

the use of science knowledge to invent tools and new ways of doing things

Question 3

Invention

Answer 3

something that has been made for the first time

Question 4

Computer

Answer 4

a tool which stores, processes and sends electronic information incredibly fast.

Question 5

Explain how some technology systems work together in a house

Answer 5

The electrical system and The plumbing system work together in a house. The electrical system heats water and the plumbing system brings it to the shower so you can take a hot shower.

Question 6

Explain how a GPS (global positioning system) helps people know where they are

Answer 6

The GPS uses the signals from satellites to figure out an exact location

Question 7

Explain the need for systems in order for technology to work in the home.

Answer 7

The Electrical system in the home brings the power from solar panels outside into your home so you can use technology inside your home.

Question 8

What did Percy Spencer accidentally discover that microwaves could do?

Answer 8

Percy Spencer accidentally discovered that microwaves can quickly cook food

Question 9

What renewable sources of energy have people used for centuries to generate power?

Answer 9

Renewable sources people have used to generate power for centuries are WIND and WATER

Question 10

How are cars a helpful and a harmful example of technology?

Answer 10

Cars are helpful by taking us place to place faster. It is harmful by polluting the air.

Question 11

What 2 renewable energy resources might meet more of our energy needs in the future?

Answer 11

SOLAR energy and WIND

Question 12

What changes in technology have changed the way we get energy?

Answer 12

The invention of the ARCHES created Aqueducts that brought water into the Roman cities.
SOLAR PANELS concentrate the Sun’s rays. This energy changed to electricity

Question 13

What must we do in order to continue to use nonrenewable fuel resources for energy?

Answer 13

We have to try and make generators that pollute the air LESS

Question 14

What 2 power sources have REPLACED water and energy?

Answer 14

ENGINES and ELECTRICITY

Question 15

What 2 states does the Hoover Dam divide?

Answer 15

ARIZONA and NEVADA

Question 16

What year was the wheel invented?

Answer 16

3500 BC

Question 17

Orville and Wilbur Wright invented the powered airplane in what year?

Answer 17

1903

Question 18

What are 2 ways we can use the Sun’s rays for energy?

Answer 18

1- Solar panels can concentrate the Sun’s rays and turn it’s energy into electricity.
2-Solar panels can also change the Sun’s energy into heat to use in the home

Question 19

Explain how science and technology are related

Answer 19

Science helps people understand how the world works and technology helps apply the understanding to solve problems and improve lives.

Question 20

Give 2 examples of ways technology can be helpful and harmful.

Answer 20

Technology can be helpful because it can make our life easier. It can be harmful by polluting our air and water.

Question 21

Compare the good and bad points of windmills and watermills.

Answer 21

The GOOD point of windmills and watermills is that they are both renewable resources and they don’t pollute the air or water.
The BAD point is that watermills can only work along a river and they are not enough power for all needs.

Question 22

What are some ways you use a computer every day, even if you don’t use a desktop computer?

Answer 22

I use computers for playing games, home schooling, and learning.