Science CBA#2 Review
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| pulley | a simple machine, consisting of wheels, that reduces force and helps make work easier
🗑
|
||||
| compound | matter made of two or more elements, such as H2O.
🗑
|
||||
| element | matter that is a pure substance and made of only one kind of atom, such as Carbon (C).
🗑
|
||||
| physical change (also called physical reaction) | occurs when one or more physical properties of a substance are changed, but the substance keeps its identity, such as water changing from a liquid to solid ice.
🗑
|
||||
| chemical change( also called chemical reaction) | occurs when one or more substances are changed into new substances with different properties that can't be change back to the original properties, such as frying an egg
🗑
|
||||
| fossil fuels | fuels such as coal, oil, and natural gas; formed over millions of years from the remains of ancient plants and animals
🗑
|
||||
| renewable resources | natural resources that can be renewed or replaces by nature, such as food crops and solar energy
🗑
|
||||
| nonrenewable resources | natural resources that cannot be replaced once used, such as oil, coal, natural gas, and minerals
🗑
|
||||
| solar energy | energy from the sun in the form of heat and light
🗑
|
||||
| geothermal energy | energy obtained from thermal energy inside the Earth
🗑
|
||||
| biomass | matter formed by plants or animals that is used as a fuel, such as wood or corn oil
🗑
|
||||
| hydroelectric energy | electricity generated using the power of falling water to turn turbines, usually associated with dams
🗑
|
||||
| law of conservation of energy | energy cannot be created or destroyed, it can only change form or be transferred
🗑
|
||||
| potential energy | stored energy an object has because of its position or shape
🗑
|
||||
| kinetic energy | energy an object has because it is moving
🗑
|
||||
| wind energy | electricity produced by using windmills
🗑
|
||||
| A hot nail is placed in a beaker of cold water and allowed to sit for several hours. What will happen to the temperature of both matter? | They will both be the same temperature after a few hours
🗑
|
||||
| radiation | the transfer of energy in the form of electromagnetic waves
🗑
|
||||
| conduction | the transfer of heat from a warmer substance to a cooler substance through direct contact (touching each other)
🗑
|
||||
| convection | the transfer of thermal energy in a fluid (liquid or gas), in which warmer fluid rises and cooler fluid sinks
🗑
|
||||
| speed | distance traveled by an object in a given amount of time, figured by distance divided by time (s = d/t)
🗑
|
||||
| A train travels 1,600 miles in 40 hours. What is its average speed? | 40 mi/h
🗑
|
||||
| A car travels 120 miles in 2 hours. What is its average speed? | 60 mi/h
🗑
|
||||
| A flashlight changes ___________ energy into ____________ energy. | electrical energy into light energy
🗑
|
||||
| You eat lunch and then ride your bike. You are turning ___________ energy into ___________energy | chemical energy into mechanical
🗑
|
||||
| A television converts electrical energy into light and sound energy. The electricity that is not used for light and sound is.... | turned into heat
🗑
|
||||
| Average speed of 400 meters in 45 seconds | 16 m/s
🗑
|
||||
| Average speed of 425 meters in 50 seconds | 8.5 m/s
🗑
|
||||
| Average speed of 375 meters in 55 seconds | 6.8 m/s
🗑
|
||||
| Average speed of 390 meters in 55 seconds | 7.09 m/s
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
bspencer61
Popular Science sets