5th grade working scientifically

Question 1

A spring is stretched by adding weights. Number of weights → length (cm): 0 → 10 1 → 18 2 → 26 3 → 34 4 → 42 If the pattern continues, what length would 5 weights give, in cm?

Answer cm

Question 2

Investigation: Does the size of a parachute affect how long it takes to fall? Which is the dependent variable (the one you measure)?

• A. drop height
• B. time to fall
• C. size of the parachute
• D. time for the water to evaporate

Question 3

A cup of hot water cools down. The results are: 0 min: 74 °C 2 min: 67 °C 4 min: 60 °C 6 min: 53 °C 8 min: 46 °C What was the temperature after 6 minutes, in °C?

Answer °C

Question 4

Investigation: Does the surface area of a puddle affect how fast it evaporates? Which is the independent variable (the one you change)?

• A. time for the water to evaporate
• B. temperature of the room
• C. minutes of exercise
• D. surface area of the water

Question 5

Investigation: Does the temperature of water affect how quickly sugar dissolves? Which is a control variable (one you keep the same)?

• A. water temperature
• B. time for the sugar to dissolve
• C. time to fall
• D. volume of water

Question 6

Water temperature (°C) → Time to dissolve (s) 5 → 53 20 → 49 15 → 45 40 → 41 50 → 37 What happens to “Time to dissolve (s)” as “Water temperature (°C)” increases?

• A. it decreases
• B. it increases
• C. it stays the same
• D. it goes up then down

Question 7

A spring is stretched by adding weights. Number of weights → length (cm): 0 → 10 1 → 14 2 → 18 3 → 22 4 → 26 If the pattern continues, what length would 6 weights give, in cm?

Answer cm

Question 8

Investigation: Does the surface area of a puddle affect how fast it evaporates? Which is the dependent variable (the one you measure)?

• A. surface area of the water
• B. time for the water to evaporate
• C. temperature of the room
• D. time for the sugar to dissolve

Question 9

A cup of hot water cools down. The results are: 0 min: 75 °C 2 min: 67 °C 4 min: 59 °C 6 min: 51 °C 8 min: 43 °C What was the temperature after 8 minutes, in °C?

Answer °C

Question 10

Investigation: How does the mass of a pendulum bob affect the time of one swing? Which is the independent variable (the one you change)?

• A. minutes of exercise
• B. time for one swing
• C. mass of the bob
• D. starting angle

Question 11

Investigation: How does the height of a ramp affect how far a toy car travels? Which is a control variable (one you keep the same)?

• A. height of the ramp
• B. the same car
• C. brightness of the bulb
• D. distance the car travels

Question 12

Number of cells → Bulb brightness (lux) 5 → 31 10 → 35 15 → 39 20 → 43 25 → 47 What happens to “Bulb brightness (lux)” as “Number of cells” increases?

• A. it stays the same
• B. it decreases
• C. it increases
• D. it goes up then down

Question 13

A spring is stretched by adding weights. Number of weights → length (cm): 0 → 10 1 → 19 2 → 28 3 → 37 4 → 46 If the pattern continues, what length would 5 weights give, in cm?

Answer cm

Question 14

Investigation: How does the mass of a pendulum bob affect the time of one swing? Which is the dependent variable (the one you measure)?

• A. time for one swing
• B. length of the string
• C. mass of the bob
• D. time for the water to evaporate

Question 15

A cup of hot water cools down. The results are: 0 min: 88 °C 2 min: 84 °C 4 min: 80 °C 6 min: 76 °C 8 min: 72 °C What was the temperature after 6 minutes, in °C?

Answer °C

Question 16

Investigation: Does the surface area of a puddle affect how fast it evaporates? Which is the independent variable (the one you change)?

• A. surface area of the water
• B. volume of water
• C. mass of the bob
• D. time for the water to evaporate