Mastering Scientific Notation: Sums & Differences Challenge

Mastering Scientific Notation: Sums & Differences Challenge

8th Grade

10 Qs

quiz-placeholder

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Mastering Scientific Notation: Sums & Differences Challenge

Mastering Scientific Notation: Sums & Differences Challenge

Assessment

Quiz

English, Mathematics

8th Grade

Hard

Created by

Anthony Clark

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A scientist measures the mass of a small particle as 3.2 x 10^-27 kg and another particle as 1.5 x 10^-26 kg. What is the total mass of both particles in standard form?

4.7 x 10^-27 kg

1.0 x 10^-25 kg

1.82 x 10^-26 kg

2.5 x 10^-26 kg

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A comet is traveling at a speed of 2.5 x 10^4 km/h. If it slows down by 1.2 x 10^3 km/h, what is its new speed in standard form?

2.4 x 10^4 km/h

2.5 x 10^4 km/h

2.38 x 10^4 km/h

1.2 x 10^4 km/h

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The distance from Earth to a nearby star is approximately 4.2 x 10^16 meters. If a spaceship travels 1.5 x 10^15 meters towards the star, how far is it from the star now in standard form?

4.05 x 10^16 meters

3.9 x 10^16 meters

4.5 x 10^16 meters

4.0 x 10^16 meters

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A bacterium can reproduce every 2 hours, and after 8 hours, there are approximately 2.5 x 10^6 bacteria. If half of them die, how many bacteria remain in standard form?

2.0 x 10^6

2.5 x 10^5

1.0 x 10^6

1.25 x 10^6

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A cell phone tower emits a signal of 3.0 x 10^-5 watts. If a second tower emits 1.2 x 10^-5 watts, what is the total power emitted by both towers in standard form?

3.5 x 10^-5 watts

5.0 x 10^-5 watts

2.5 x 10^-5 watts

4.2 x 10^-5 watts

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A researcher finds that a certain chemical is present in a solution at a concentration of 4.5 x 10^-3 mol/L. If another solution has a concentration of 2.0 x 10^-3 mol/L, what is the total concentration when mixed in standard form?

4.0 x 10^-3 mol/L

5.5 x 10^-3 mol/L

7.0 x 10^-3 mol/L

6.5 x 10^-3 mol/L

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A satellite orbits Earth at a height of 3.6 x 10^7 meters. If it descends by 1.2 x 10^6 meters, what is its new height in standard form?

3.6 x 10^7

3.6 x 10^6

3.588 x 10^7

3.5 x 10^7

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