Density And buonyant Force Test

Question 0

2. What is the tool used to measure the mass of an object

Answer 0

Balance

Question 1

1. Define mass

Answer 1

A measure of the amount of matter in an object

Question 2

3. An empty cylinder has a mass of 23 grams. When the liquid is added, the mass become 57 grams. What is he mass of the liquid by itself?

Answer 2

57-23= 34 grams

Question 3

4. Define volume

Answer 3

A measure of the size of a body or region in three-dimensional space.

Question 4

5. What tool is used to measure the volume of liquid

Answer 4

Graduated cylinder

Question 5

6. What tool is used to measure the volume of a regularly-shapes object

Answer 5

Metric Ruler

Question 6

7. What is the formula used to calculate the volume of a regular-shaped object

Answer 6

L x W x H

Question 7

8. What is the method of calculating the volume of an irregularly-shaped object

Answer 7

Water displacement

Question 8

9. If an object placed in water rises the water level 5 milliliters, what is the objects volume

Answer 8

5 cm3

Question 9

10. 1 milliliter=

Answer 9

1 cm3

Question 10

11. Define density

Answer 10

The ratio of the mass of a substance to the volume of the substance

Question 11

12. Explain why a golf ball has a higher density than a table-tennis ball

Answer 11

A golf ball is denser than a table-tennis ball because the golf ball contains more matter in a similar volume

Question 12

13. True or False: If an object has a larger volume than another object made of the exact same material, it is denser

Answer 12

False

Question 13

14. If the density of lead is 12 g/cm3, calculate the mass of piece of lead that has a volume of 45 cm3

Answer 13

12 x 45= 540g

Question 14

15. Write the density of a triangle and write the correct metric units for each part

Answer 14

M
         /   \ 
        D   V
Mass= grams
Density= g/cm3 or g/mL
Volume= mL

Question 15

16. Write the three formulas for calculating density, mass, and volume using the density triangle

Answer 15

Mass= DxV
Density=M/V
Volume=M/D

Question 16

17. If an object’s density is over 1g/cm3 will it float or sink? What if an objects density is over 1g/cm3

Answer 16

Sink

Float

Question 17

18. If an object’s mass is more than its volume, will it sink or float? If an objects volume is more than its mass, will it float or sink?

Answer 17

Sink

Float

Question 18

19. On a graph which line represents the highest density: steepest or least steep

Answer 18

Steepest

Question 19

20. If ice can float on the surface of water, is it just as dense as water or less dense

Answer 19

Less dense

Question 20

21. Define buoyant force

Answer 20

The upward force that keeps an object immersed in or floating on a liquid

Question 21

22. True or False: Buoyant force works against the downward pull of gravity

Answer 21

True

Question 22

23. What happens to the pressure of a fluid as an object’s goes deeper

Answer 22

Pressure increases as depth increases. There’s more pressure at the bottom than the top of the object

Question 23

24. What is Archimedes Principle

Answer 23

The principle that states that the buoyant force on an object in a fluid is an upward force equal to the weight of the volume of fluid that the object displaces

Question 24

25. Buoyant force equals the weight of water that is displaced

Answer 24

25. Buoyant force equals the weight of water that is displaced

Question 25

26. If buoyant force is equal to the weight of the object, then the object will

Answer 25

Float within the fluid

Question 26

27.if buoyant force is greater than the weight of the object, then the object will be

Answer 26

Buoyed up

Question 27

28. If buoyant force is less than the weights of the object, the the object will

Answer 27

Sink