Properties of matter (pg 68 y 69) Fourth grade MATTER Natural Sciences
Ajuste de pantallaEl ajuste de pantalla se aprecia al ver el vídeo en pantalla completa. Elige la presentación que más te guste:
How can we measure matter?
The Properties of Matter. How can we measure matter? Read and think. 1. Read and answer the
00:00:00
questions. A. Which property of matter can you measure with a jug of water? B. Which property
00:00:09
of matter can you measure with scales? C. What do we need to know to measure density?
00:00:16
Matter has three properties, volume, mass, and density. Volume is the amount of space
00:00:22
that matter occupies. The unit of measurement for volume is cubic centimeters, so cm to the third
00:00:32
degree. A football has a bigger volume than a tennis ball. It's true because it's much bigger.
00:00:40
mass is the amount of matter in an object we measure mass in grams and kilograms we use scales
00:00:48
to measure mass usually if you're a baker and you're at home baking bread for instance you
00:00:58
need to measure the amount of flour right and usually you use a scale finding the mass and
00:01:04
volume of a stone we can use scales to find out the mass of a stone right we can use a measuring
00:01:11
jug and water to find out the volume of a stone. Fill the measuring jug with water up to the 500
00:01:19
milliliter mark. Place the stone in the jug. The volume of stone makes the water level rise
00:01:26
at the rate of one milliliter equals one cubic centimeter. Subtract 500 milliliters
00:01:35
from the new water level. 600 milliliters minus 500 milliliters is 100 milliliters.
00:01:44
100 milliliters equals 100 cubic centimeters. The volume of the stone is thus 100 cubic centimeters.
00:01:53
Density is the amount of mass that there is in the volume of an object. Ooh, tricky. To find out
00:02:03
the density of an object, we divide its mass by its volume. Compare the density of these two
00:02:10
different stones. So the volume of the first stone is five cubic centimeters, and its mass is 12.5
00:02:19
grams. So what do we do? We divide its mass, 12.5 grams, divided by five cubic centimeters,
00:02:26
its volume. So its density is 2.5 grams over cubic centimeters. Now let's look at the other
00:02:35
stone. So again, we divide its mass, 15 grams, by its volume, 7.5 cubic centimeters, which comes
00:02:45
out to 2 grams over cubic centimeters.
00:02:54
- Idioma/s:
- Autor/es:
- Beatriz
- Subido por:
- Beatriz C.
- Licencia:
- Reconocimiento - No comercial
- Visualizaciones:
- 88
- Fecha:
- 15 de abril de 2020 - 19:49
- Visibilidad:
- Clave
- Centro:
- CP INF-PRI SAN PABLO
- Duración:
- 03′
- Relación de aspecto:
- 16:9 Es el estándar usado por la televisión de alta definición y en varias pantallas, es ancho y normalmente se le suele llamar panorámico o widescreen, aunque todas las relaciones (a excepción de la 1:1) son widescreen. El ángulo de la diagonal es de 29,36°.
- Resolución:
- 848x480 píxeles
- Tamaño:
- 30.57 MBytes