4/7 & 4/8 - 8th Grade Agenda

Learning Objective: Learn about RocketsCollect HW: Reading & Notetaking p.216 - 218Textbook Reading: p.489 - 491Chap 11 & 12 Study GuideHW: Reading & Notetaking p.219– 220Reminder Chap 11 & 12 Test on 4/14

Daily Reflection

• Prompt: Write 3 facts that you know about the moon

What causes Solar Eclipses

• The moon casts a shadow on the Earth

Solar Eclipse

Why don’t we see Solar eclipses every month?

• Because the moon’s orbit is tilted with respect to Earth’s orbit.

How are Lunar Eclipses created?

• The Moon passes through the Earth’s shadow.

• Lunar Eclipses are much more common than Solar Eclipses

Lunar Eclipses

• Why do lunar eclipses occur only at full moon?

What causes tides• Tides occur

mainly because of differences in how much the moon pulls on different parts of Earth

What are the Characteristics of the Moon?

• No Air• Diameter 3476 km (1/4 of

the Earth’s Diameter)• Less Dense than the

Earth• Temperature 140C to -

180C• Ice near the Moon’s poles

How did the Moon get created?• 4.5 Billion years ago, a small planet collided

with the Earth to form the Moon.

How do Rockets Work?

• A rocket moves forward when gases expelled from the rear of the rocket pushes it in the opposite direction

Multistage Rockets

History of Rockets

• In 1942, V2 Rocket became the first man made object launched into space.

• It was developed by German scientist Wernher Von Bran during World War 2

• Von Bran help develop the US Space program

History of Manned Space Flight

• Russian put the first satellite Sputnik 1 in 1957

• Russian put the first dog (Liaka) into space in 1957

• Russian put the first man (Yuri Gagarin) in space in 1961

• The first American (John Glenn) was put into orbit in 1962

History of Manned Space Flight

• Americans (Apollo 11) landed on the moon in 1969

• First Shuttle flight was in 1981

• After 2 Shuttles were lost, the Space Shuttles were retired in 2011

• International Space Station has been in operation since 1998