Grade by Grade
E. Earth and Space Systems · Space

Space: Unit Review

A1.1 A1.2 A1.3 A1.4 A1.5 A2.1 A2.2 A3.1 A3.2 A3.3 E1.1 E1.2 E1.3 E2.1 E2.2 E2.3 E2.4 E2.5 E2.6About 40 minutes
Learning goals
  • I can describe the parts of the solar system and how bodies in space emit or reflect light.
  • I can explain mass, weight and gravity.
  • I can explain days, years, seasons, Moon phases, eclipses and tides.
  • I can describe space technologies, life in space, satellites that watch Earth, and the impacts of space exploration.

Words to know

solar system
The Sun and everything that orbits it.
natural satellite
A natural object that orbits a planet, such as a moon.
weight
The force of gravity on a mass, in newtons.
mass
The amount of matter in an object, in kilograms.
rotation / revolution
Spinning on an axis (a day) / travelling around the Sun (a year).
eclipse
When one body moves into the shadow of another, or blocks our view of the Sun.
perspective
A point of view.

Let's review!

In this unit you explored the solar system: the Sun, the planets, moons, asteroids, comets and meteoroids. You found out which bodies emit light and which reflect it, learned the difference between mass and weight, and used the motions of Earth, the Moon and the Sun to explain days, years, seasons, phases, eclipses and tides. You looked at the technology used to explore space (including Canada's contributions), how astronauts live in space, how satellites watch our changing planet, and how to evaluate the impacts of space exploration from different perspectives, including Ojibwe and Inuit sky knowledge.

This review has a few questions from every lesson. Try each one, then press Show answer to check.

Earth ROTATESspins on its axis1 day = 24 hours→ day and nightEarth REVOLVESorbits the Sun1 year = 365¼ days→ leap day every 4 yearsEarth is TILTEDabout 23.4°leans the same way→ seasonsNThe Moon ORBITSnew moon to new moon:about 29.5 days→ phases
The four motions to remember: Earth's rotation (days), revolution (years), tilt (seasons), and the Moon's orbit (phases).
the same student on EarthMASS: 40 kgWEIGHT: 392 N(40 × 9.8)mass stays the samethe same student on the MoonMASS: 40 kgWEIGHT: 64 N(40 × 1.6)weight changes with gravity
Mass vs weight in one picture: the student's mass is 40 kg everywhere, but the weight (in newtons) depends on the strength of gravity.

Our Solar System: The Sun and the Planets

1

Name the planets in order from the Sun.

2

Which planets are rocky, and which are giants?

3

Uranus is 2867 million km from the Sun. In a model where 1 cm = 10 million km, how far is it from the Sun?

4

Why is Venus hotter than Mercury?

Moons, Asteroids, Comets and Meteoroids

1

What is the difference between a meteoroid, a meteor and a meteorite?

2

What is a comet made of, and which way does its tail point?

3

Is a rock that orbits Jupiter a moon or an asteroid?

Shining or Reflecting? Light in Space

1

Name one body that emits light and one that reflects light.

2

Why can we see Jupiter at night?

3

Is the "evening star" (Venus) a star?

Mass, Weight and Gravity

1

A 45 kg student goes to the Moon (1.6 N per kg). What is her mass there? Her weight?

2

Why is your weight different on Mars than on Earth?

3

True or false: astronauts on the space station float because there is no gravity there.

4

In a weight calculator program, what are the two inputs?

Earth and the Sun: Days, Years and Seasons

1

What causes day and night? What causes a year?

2

What causes the seasons?

3

What did Mishi Bizhiw (Curly Tail) overhead in spring tell Ojibwe people?

The Moon: Phases, Eclipses and Tides

1

Name the Moon's phases in order, starting with new moon.

2

What lines up in a lunar eclipse?

3

What causes tides?

4

How can you watch a partial solar eclipse safely?

Technology for Exploring Space

1

Name three technologies used to explore space.

2

What made Canada the third nation to design and build its own satellite?

3

Name two Canadian robots used in space.

Living and Working in Space

1

Name two physiological needs and how astronauts meet them.

2

Name one emotional need and how astronauts meet it.

3

Why do astronauts' bones get weaker in space?

Satellites Watching Our Changing Earth

1

Give one example of a satellite helping us understand climate change.

2

Why is radar useful for watching Arctic ice?

3

Give one limit of satellite data.

Is Space Exploration Worth It? Impacts and Perspectives

1

Name one benefit and one cost of space exploration.

2

Why is space debris a problem?

3

How did Inuit use Aagjuuk?

4

What makes an evaluation fair?

Just for fun

How do astronauts organize a party?

They planet! 🪐

How to use this review

  1. Try each question before you press Show answer.
  2. Put a check mark beside the ones you got right.
  3. If you missed two or more in one section, go back to that lesson and redo its Your turn questions.
  4. Teach one idea to someone at home using a model: a lamp and a ball work for days, seasons, phases and eclipses.
Check your understanding

Quiz

1.

Which planet is the largest?

2.

A streak of light from a space rock burning in our atmosphere is a...

3.

Which body emits its own light?

4.

Your mass on the Moon is...

5.

A 10 kg object on Earth (9.8 N per kg) weighs...

6.

Seasons are caused by...

7.

In a solar eclipse, which body is in the middle?

8.

Who was the first Canadian astronaut in space?

9.

Why do astronauts exercise about 2 hours a day?

10.

Which is an environmental problem caused by space exploration?

For parents and teachers

What this review covers: all expectations in Strand E, Space (E1.1 to E1.3, E2.1 to E2.6), with the Strand A STEM skills used in the unit (A1.1 to A1.5, A2.1, A2.2, A3.1 to A3.3).

If your child had trouble with...

  • planet order, rocky vs giant planets, scale distances → revisit Our Solar System: The Sun and the Planets.
  • moons, asteroids, comets, meteoroid/meteor/meteorite → revisit Moons, Asteroids, Comets and Meteoroids.
  • which bodies shine on their own → revisit Shining or Reflecting? Light in Space.
  • mass vs weight, calculating weight on other worlds, floating astronauts → revisit Mass, Weight and Gravity.
  • day and night, the year, the seasons, Ojibwe seasonal stars → revisit Earth and the Sun: Days, Years and Seasons.
  • Moon phases, eclipses, tides, eclipse safety → revisit The Moon: Phases, Eclipses and Tides.
  • space technologies and Canadian milestones, jobs and skilled trades → revisit Technology for Exploring Space.
  • conditions in space and astronauts' needs → revisit Living and Working in Space.
  • satellites and climate change, strengths and limits of satellite data → revisit Satellites Watching Our Changing Earth.
  • benefits and costs, perspectives, Inuit and Ojibwe sky knowledge → revisit Is Space Exploration Worth It? Impacts and Perspectives.

Safety reminder: never look at the Sun directly or through binoculars, a telescope, a camera or sunglasses.

Tip: ask your child to explain a Moon phase or an eclipse to you using a lamp and a ball. Teaching an idea is one of the best ways to remember it.