7th S1 Quiz #6

Last updated over 5 years ago

5 questions

1

A farm family has a big garden where they grow a lot of their food. They grow tomatoes, carrots, sweet corn, and potatoes. They have to protect their garden from weeds, from insects, and from rabbits that like to eat the young plants. What would scientists call the records that the family kept about how fast their plants grew and how much they produced?

hypothesis

data

test

conclusion

Two companies make golf balls, and each claim that its ball goes farther. Which would be the best scientific evidence to decide when ball goes farther?

A machine hits each ball 100 times with exactly the same force, and you measure how far
each goes.

You read results of tests conducted on the two balls by each company.

You ask the best 100 golfers in the world which ball goes farther.

The best golfer in the world hits each ball 100 times, and you measure how far each goes.

Why is it important to accurately report procedures and results from an experiment?

So that others can admire your work.

So that others can disprove the results of the experiment.

So that others can check that the experiment was done correctly.

So that others can repeat the experiment to see if they get similar results.

Jen’s class was investigating how a powdered drink mix dissolves in water of different temperatures. They needed to determine how much mix would dissolve in a given sample of water. Which would be the best procedure?

Measure the mass of mix before and after shaking small amounts into the water until no
more will dissolve. Calculate the difference.

Shake a little bit in at a time until no more will dissolve. Count the number of shakes.

Add three packages of mix to the water. See how much of it dissolves.

Add heaping teaspoons of mix until no more dissolves.

1. Juan’s class was investigating how fast ice cubes melt at different locations in the room. Which would be the BEST way to select ice cubes to use?

Measure the mass of several ice cubes and choose ones that have the greatest mass.

Take ice cubes from the same bag.

Measure the mass of several cubes and choose the ones that are closest in mass.

Choose ice cubes that look about the same size.

A farm family has a big garden where they grow a lot of their food. They grow tomatoes, carrots, sweet corn, and potatoes. They have to protect their garden from weeds, from insects, and from rabbits that like to eat the young plants. What would scientists call the records that the family kept about how fast their plants grew and how much they produced? 

hypothesis

data

test

conclusion

Two companies make golf balls, and each claim that its ball goes farther. Which would be the best scientific evidence to decide when ball goes farther?

A machine hits each ball 100 times with exactly the same force, and you measure how far
each goes.

You read results of tests conducted on the two balls by each company.

You ask the best 100 golfers in the world which ball goes farther.

The best golfer in the world hits each ball 100 times, and you measure how far each goes.

Why is it important to accurately report procedures and results from an experiment?

So that others can admire your work.

So that others can disprove the results of the experiment.

So that others can check that the experiment was done correctly.

So that others can repeat the experiment to see if they get similar results.

Jen’s class was investigating how a powdered drink mix dissolves in water of different temperatures. They needed to determine how much mix would dissolve in a given sample of water. Which would be the best procedure?

Measure the mass of mix before and after shaking small amounts into the water until no
more will dissolve. Calculate the difference.

Shake a little bit in at a time until no more will dissolve. Count the number of shakes.

Add three packages of mix to the water. See how much of it dissolves.

Add heaping teaspoons of mix until no more dissolves.

1. Juan’s class was investigating how fast ice cubes melt at different locations in the room. Which would be the BEST way to select ice cubes to use?

Measure the mass of several ice cubes and choose ones that have the greatest mass.

Take ice cubes from the same bag.

Measure the mass of several cubes and choose the ones that are closest in mass.

Choose ice cubes that look about the same size.