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Space & Astronomy Basic Algebra

Basic Algebra

Practice easy basic algebra skills using real astronomical facts and simple space formulas.

algebra space astronomy

10 Questions Easy Ages 8+ Oct 5, 2026

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About this Study Set

This study set covers Basic Algebra through 10 practice questions. Practice easy basic algebra skills using real astronomical facts and simple space formulas. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 10 questions from the Space & Astronomy Basic Algebra study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 The Moon takes about 27 days to orbit Earth once. Using the expression 27m for total days, how many days pass during m = 3 orbits?

A 54 days
B 81 days
C 108 days
D 135 days

2 Jupiter has 95 moons. If Mars has m moons and Jupiter has 47.5 times as many moons (47.5m = 95), how many moons does Mars have?

3 Using the distance formula d = r × t, where light speed r = 300,000 km/s, how far (d) does light travel in t = 5 seconds?

A 600,000 km
B 1,200,000 km
C 1,500,000 km
D 3,000,000 km

4 A rock sample from Saturn's rings has mass M = x + y, where ice mass x = 85 g and dust mass y = 15 g. What is M?

A 70 g
B 90 g
C 100 g
D 115 g

5 Venus orbits the Sun in 225 Earth days. In the formula y = 225x, how many Earth days (y) pass during x = 4 Venus orbits?

A 450 days
B 675 days
C 900 days
D 1,000 days

6 Mars gravity is about 0.38 times Earth's gravity (g = 0.38 × E). If E = 100 kg on Earth, what is the weight g on Mars?

A 19 kg
B 38 kg
C 50 kg
D 76 kg

7 A space agency models telescope operational cost in millions as P = 4n. If the total cost P = 20 million, solve for n.

8 Solar panels on the Space Station generate power using P = 30w, where w is active wings. If power P = 120 kW, what is w?

9 The formula to convert Kelvin to Celsius is C = K - 273.15. If a cosmic sensor measures K = 300 K, what is C in Celsius?

A 16.85°C
B 26.85°C
C 36.85°C
D 273.15°C

10 Sound travels in Earth's air at 340 m/s. Using distance d = 340t, how far does sound travel in t = 10 seconds?

A 1,700 meters
B 3,400 meters
C 6,800 meters
D 34,000 meters

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